HF Satellite Transponder
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR
A 15 to 10 Mode K satellite would be fun. 12 meters is allocated to the Amateur Satellite Service, of course, but the limited bandwidth of the band might cause conflicts if the satellite continues to function when the solar cycle starts to perk up again. 15 meters, on the other hand, has plenty of room, especially if you put the uplink somewhere above 21.400.
73,
Paul, N8HM
On Thu, May 26, 2016 at 1:45 PM, Robert Bruninga bruninga@usna.edu wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Paul makes good points on using 15 instead of 12. RS-12/13 ran primarily in Mode K, 15 up and 10 down, with I think a 40 Khz transponder. It was my first satellite, and many others I'm sure. Doppler is really low, easy to work half duplex with a fan dipole and a single HF rig. With the upcoming solar minimum, I think it'd be a popular transponder (again) if available for voice as well as CW/data.
Separate email to follow direct on a possibly interested builder.
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Paul Stoetzer Sent: Thursday, May 26, 2016 1:50 PM To: Robert Bruninga Cc: amsat bb Subject: Re: [amsat-bb] HF Satellite Transponder
A 15 to 10 Mode K satellite would be fun. 12 meters is allocated to the Amateur Satellite Service, of course, but the limited bandwidth of the band might cause conflicts if the satellite continues to function when the solar cycle starts to perk up again. 15 meters, on the other hand, has plenty of room, especially if you put the uplink somewhere above 21.400.
73,
Paul, N8HM
On Thu, May 26, 2016 at 1:45 PM, Robert Bruninga bruninga@usna.edu wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I find that RS12/13 had 8 watt transponders. WOW! That's for 40 kHz bandwidth.
Or if one user was in the passband, then he got all 8 watts!? That coiuld be a very loud signal? What was Mode A and KT downlinks like? Were they armchair copy or pull them out of the noise contacts?
To get down to say the 2 watt level for a cubesat, then this suggests only a 10 kHz wide transponder. And with 3 kHz signals, that could only be 3 signals. AND, what is it like near the edges of a super narrow filter? Does the steep phase changes on the edge of the filter then distort SSB?
Bob, WB4APR
On Thu, May 26, 2016 at 1:49 PM, Paul Stoetzer n8hm@arrl.net wrote:
A 15 to 10 Mode K satellite would be fun. 12 meters is allocated to the Amateur Satellite Service, of course, but the limited bandwidth of the band might cause conflicts if the satellite continues to function when the solar cycle starts to perk up again. 15 meters, on the other hand, has plenty of room, especially if you put the uplink somewhere above 21.400.
73,
Paul, N8HM
On Thu, May 26, 2016 at 1:45 PM, Robert Bruninga bruninga@usna.edu wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
It was extremely strong. I often worked it listening with a magmount antenna. 2w and 20khz would work fine.
73, Drew KO4MA
On May 26, 2016, at 5:42 PM, Robert Bruninga bruninga@usna.edu wrote:
I find that RS12/13 had 8 watt transponders. WOW! That's for 40 kHz bandwidth.
Or if one user was in the passband, then he got all 8 watts!? That coiuld be a very loud signal? What was Mode A and KT downlinks like? Were they armchair copy or pull them out of the noise contacts?
To get down to say the 2 watt level for a cubesat, then this suggests only a 10 kHz wide transponder. And with 3 kHz signals, that could only be 3 signals. AND, what is it like near the edges of a super narrow filter? Does the steep phase changes on the edge of the filter then distort SSB?
Bob, WB4APR
On Thu, May 26, 2016 at 1:49 PM, Paul Stoetzer n8hm@arrl.net wrote:
A 15 to 10 Mode K satellite would be fun. 12 meters is allocated to the Amateur Satellite Service, of course, but the limited bandwidth of the band might cause conflicts if the satellite continues to function when the solar cycle starts to perk up again. 15 meters, on the other hand, has plenty of room, especially if you put the uplink somewhere above 21.400.
73,
Paul, N8HM
On Thu, May 26, 2016 at 1:45 PM, Robert Bruninga bruninga@usna.edu wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
is sat operations even legal on that band? 12M?
The old Russian 15 & 10 meters were cool,
I'd like to see a good old mode "A" myself. It has to be the easiest ( except for the FM Channel repeater on a very tall tower equivalent birds)
Extreme simple gear can get you on Mode "A"
Ive done it with a dipole on 10 and a coathanger GP on 2 and the 2 transmitter was a FM rig with the mic disconnected and a straight key on the PTT. it was a little chirpy but hey worked like 30 states with that simple thing.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 5/26/2016 12:45 PM, Robert Bruninga wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Yes, the Amateur Satellite Service has allocations in 40m (7.000 - 7.100 only), 20m (14.000 - 14.250 only), 17m, 15m, 12m, and 10m (entire band for the last four).
73,
Paul, N8HM
On Thu, May 26, 2016 at 2:21 PM, Joe nss@mwt.net wrote:
is sat operations even legal on that band? 12M?
The old Russian 15 & 10 meters were cool,
I'd like to see a good old mode "A" myself. It has to be the easiest ( except for the FM Channel repeater on a very tall tower equivalent birds)
Extreme simple gear can get you on Mode "A"
Ive done it with a dipole on 10 and a coathanger GP on 2 and the 2 transmitter was a FM rig with the mic disconnected and a straight key on the PTT. it was a little chirpy but hey worked like 30 states with that simple thing.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 5/26/2016 12:45 PM, Robert Bruninga wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sorry,
But on hf only allocations for satellite ops are existing within 29.300 - 29.510 kHz for IARU Region 2: http://www.iaru-r2.org/documents/explorer/files/Plan%20de%20bandas%20%7C%20B...
Same as in Region 1 and 3:
http://www.iaru-r1.org/index.php/documents/func-download/404/chk,fc90aa26474... http://iaru-r3.org/?dl_id=1
Bandplans were modified from time to time ;-)
So please contact your IARU HF Manager for further information.
73 Tom DF5JL
Am 26.05.2016 um 20:35 schrieb Paul Stoetzer:
Yes, the Amateur Satellite Service has allocations in 40m (7.000 - 7.100 only), 20m (14.000 - 14.250 only), 17m, 15m, 12m, and 10m (entire band for the last four).
73,
Paul, N8HM
On Thu, May 26, 2016 at 2:21 PM, Joe nss@mwt.net wrote:
is sat operations even legal on that band? 12M?
The old Russian 15 & 10 meters were cool,
I'd like to see a good old mode "A" myself. It has to be the easiest ( except for the FM Channel repeater on a very tall tower equivalent birds)
Extreme simple gear can get you on Mode "A"
Ive done it with a dipole on 10 and a coathanger GP on 2 and the 2 transmitter was a FM rig with the mic disconnected and a straight key on the PTT. it was a little chirpy but hey worked like 30 states with that simple thing.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 5/26/2016 12:45 PM, Robert Bruninga wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sure, the IARU bandplans only have satellite uplinks or downlinks at those frequencies, but the ITU Radio Regulations allocate portions of 40m and 20m, as well as the entirety of 17m, 15m, 12m, and 10m to the Amateur Satellite Service.
A 15m or 12m uplink is perfectly legal.
73,
Paul, N8HM
On Thu, May 26, 2016 at 3:28 PM, Tom DF5JL df5jl@darc.de wrote:
Sorry,
But on hf only allocations for satellite ops are existing within 29.300
- 29.510 kHz for IARU Region 2:
http://www.iaru-r2.org/documents/explorer/files/Plan%20de%20bandas%20%7C%20B...
Same as in Region 1 and 3:
http://www.iaru-r1.org/index.php/documents/func-download/404/chk,fc90aa26474... http://iaru-r3.org/?dl_id=1
Bandplans were modified from time to time ;-)
So please contact your IARU HF Manager for further information.
73 Tom DF5JL
Am 26.05.2016 um 20:35 schrieb Paul Stoetzer:
Yes, the Amateur Satellite Service has allocations in 40m (7.000 - 7.100 only), 20m (14.000 - 14.250 only), 17m, 15m, 12m, and 10m (entire band
for
the last four).
73,
Paul, N8HM
On Thu, May 26, 2016 at 2:21 PM, Joe nss@mwt.net wrote:
is sat operations even legal on that band? 12M?
The old Russian 15 & 10 meters were cool,
I'd like to see a good old mode "A" myself. It has to be the easiest ( except for the FM Channel repeater on a very tall tower equivalent
birds)
Extreme simple gear can get you on Mode "A"
Ive done it with a dipole on 10 and a coathanger GP on 2 and the 2 transmitter was a FM rig with the mic disconnected and a straight key on the PTT. it was a little chirpy but hey worked like 30 states with that simple thing.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 5/26/2016 12:45 PM, Robert Bruninga wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite
a
slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming
down
in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views
of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On Thu, May 26, 2016 at 2:28 PM, Tom DF5JL df5jl@darc.de wrote:
But on hf only allocations for satellite ops are existing within 29.300
- 29.510 kHz for IARU Region 2:
People get sloppy sometimes. That should have said "US FCC regulations allow space stations over the entire 10m band" (specifically, 47 CFR 97.207(c)(1)).
You are confusing a bandplan with an allocation. You may want to check http://www.itu.int/en/ITU-R/space/AmateurDoc/ARS-ART5_E.pdf for the actual allocations.
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Tom DF5JL Sent: Thursday, May 26, 2016 3:29 PM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] HF Satellite Transponder
Sorry,
But on hf only allocations for satellite ops are existing within 29.300 - 29.510 kHz for IARU Region 2: http://www.iaru-r2.org/documents/explorer/files/Plan%20de%20bandas%20%7C%20B and-plan/R2%20Band%20Plan%202013.pdf
Same as in Region 1 and 3:
http://www.iaru-r1.org/index.php/documents/func-download/404/chk,fc90aa26474 640bdeafda3efaf42839f/no_html,1/ http://iaru-r3.org/?dl_id=1
Bandplans were modified from time to time ;-)
So please contact your IARU HF Manager for further information.
73 Tom DF5JL
Am 26.05.2016 um 20:35 schrieb Paul Stoetzer:
Yes, the Amateur Satellite Service has allocations in 40m (7.000 - 7.100 only), 20m (14.000 - 14.250 only), 17m, 15m, 12m, and 10m (entire band for the last four).
73,
Paul, N8HM
On Thu, May 26, 2016 at 2:21 PM, Joe nss@mwt.net wrote:
is sat operations even legal on that band? 12M?
The old Russian 15 & 10 meters were cool,
I'd like to see a good old mode "A" myself. It has to be the easiest ( except for the FM Channel repeater on a very tall tower equivalent birds)
Extreme simple gear can get you on Mode "A"
Ive done it with a dipole on 10 and a coathanger GP on 2 and the 2 transmitter was a FM rig with the mic disconnected and a straight key on the PTT. it was a little chirpy but hey worked like 30 states with that simple thing.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 5/26/2016 12:45 PM, Robert Bruninga wrote:
I may have a launch opportunity for an HF=HF transponder for a possible cubesat idea. Probably something like 12m up and 10m down?
Is this worth doing (re-doing) at this point of technology? Enough bandwidth to support a few voice channels?
Any volunteers to build the translator board?
How is 24 MHz band used? The entire SSB portion of the band is only 60 kHz, so using say 15 kHz for a linear translator to 10m would be quite a slice. But then the downlink at 10m would be OK since it does have an exclusive satellite band and so any inadvertent QSO's would be coming down in a non-competing downlink
Just some open ended thinking after Dayton.
Bob, WB4aPR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring
membership.
Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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Joe WB9SBD said (in part):
Extreme simple gear can get you on Mode "A"
If you have an HF radio... (Or in my case - a working one)
These days, a lot of hams don't have HF capability, and many have no desire to add that capability.
Jim - K6CCC
Just like some have no desire for VHF or higher. A major majority of hams have no gig or higher. If we limit ourselves to what we assume others want we limit progress and learning and stuff, that's not good.
Sent from a mobile device.
On May 26, 2016, at 1:13 PM, Jim Walls jim@k6ccc.org wrote:
Joe WB9SBD said (in part):
Extreme simple gear can get you on Mode "A"
If you have an HF radio... (Or in my case - a working one)
These days, a lot of hams don't have HF capability, and many have no desire to add that capability.
Jim - K6CCC
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I hear nothing about using S band. It was great on AO40 (sobsob). We cobbled together cheap S band down converters 73 Bob W7LRD
----- Original Message -----
From: "Kelly Keeton" kellyrkeeton@gmail.com To: jim@k6ccc.org Cc: "amsat-bb" amsat-bb@amsat.org Sent: Thursday, May 26, 2016 2:21:53 PM Subject: Re: [amsat-bb] HF Satellite Transponder
Just like some have no desire for VHF or higher. A major majority of hams have no gig or higher. If we limit ourselves to what we assume others want we limit progress and learning and stuff, that's not good.
Sent from a mobile device.
On May 26, 2016, at 1:13 PM, Jim Walls jim@k6ccc.org wrote:
Joe WB9SBD said (in part):
Extreme simple gear can get you on Mode "A"
If you have an HF radio... (Or in my case - a working one)
These days, a lot of hams don't have HF capability, and many have no desire to add that capability.
Jim - K6CCC
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
All, Bob specifically asked about a HF to HF transponder, presumably because the opportunity was limited to such an animal. Let's keep that in mind.
73, Drew KO4MA
On May 26, 2016, at 5:27 PM, Bob- W7LRD w7lrd@comcast.net wrote:
I hear nothing about using S band. It was great on AO40 (sobsob). We cobbled together cheap S band down converters 73 Bob W7LRD
----- Original Message -----
From: "Kelly Keeton" kellyrkeeton@gmail.com To: jim@k6ccc.org Cc: "amsat-bb" amsat-bb@amsat.org Sent: Thursday, May 26, 2016 2:21:53 PM Subject: Re: [amsat-bb] HF Satellite Transponder
Just like some have no desire for VHF or higher. A major majority of hams have no gig or higher. If we limit ourselves to what we assume others want we limit progress and learning and stuff, that's not good.
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On May 26, 2016, at 1:13 PM, Jim Walls jim@k6ccc.org wrote:
Joe WB9SBD said (in part):
Extreme simple gear can get you on Mode "A"
If you have an HF radio... (Or in my case - a working one)
These days, a lot of hams don't have HF capability, and many have no desire to add that capability.
Jim - K6CCC
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Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On Thu, May 26, 2016 at 4:21 PM, Kelly Keeton kellyrkeeton@gmail.com wrote:
Just like some have no desire for VHF or higher. A major majority of hams have no gig or higher. If we limit ourselves to what we assume others want we limit progress and learning and stuff, that's not good.
Some are convinced that "real ham radio" ended with Novice Enhancement, or removal of code from the Technician license in '91 or the withdrawal of Elements 1B and 1C in 2000 or ... or ... Whatever.
I know the test sessions I lead are busy as was the Tech/General class our club ran this past spring and I also know that some of the newbies aren't often heard On The Ultra Highs because they are too busy on HF (listen for some of them on our local 10m net, Wednesdays at 2000 CT, on 28445 kHz).
Getting above 1 GHz isn't easy. Actually, 900 isn't that easy, either. In fact, I'm looking for a clean IC910H with the L-band module so I can do just as you suggest. :-)
That's True. I forgot that 99% new hams no longer come into the hobby via the HF bands.
Back in the old days it was the other way around he he he. Everyone or most everyone had HF.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 5/26/2016 3:13 PM, Jim Walls wrote:
Joe WB9SBD said (in part):
Extreme simple gear can get you on Mode "A"
If you have an HF radio... (Or in my case - a working one)
These days, a lot of hams don't have HF capability, and many have no desire to add that capability.
Jim - K6CCC
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (9)
-
Andrew Glasbrenner -
Bob- W7LRD -
Jim Walls -
Joe -
Kelly Keeton -
Paul Stoetzer -
Peter Laws -
Robert Bruninga -
Tom DF5JL