15-10m satellite transponders to be launched
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS
Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
Steve AI9IN
On 2019-04-10 7:27 pm, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________
Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
I used a 2 element HF yagi for uplink and downlink (mostly because that's what was on-hand). I aimed the beam in a general North-South orientation but as I recall it didn't matter much which way it was pointed. Geeeze ... I was a youngster back then!
-- 73 de JoAnne K9JKM [email protected]
At 07:09 PM 4/10/2019 -0500, JoAnne K9JKM [email protected]wrote:
I used a 2 element HF yagi for uplink and downlink (mostly because that's what was on-hand). I aimed the beam in a general North-South orientation but as I recall it didn't matter much which way it was pointed. Geeeze ... I was a youngster back then!
-- 73 de JoAnne
I remember Signals on RS-10/11 were nice and strong, but I wasn't able to do mode K on it because I didn't have Extra class privileges at the time and the uplink was in the extra class portion of 15.
KB7ADL
Years ago, I used a cross dipole for ten with a screen under it. It had a bowl shaped pattern and worked pretty well. For fifteen used a "J pole made of twin lead from a tree. But as one poster noted when the bands were open you didn't need much. 73, Gary AA1UE On Wednesday, April 10, 2019, 8:09:36 PM EDT, JoAnne K9JKM via AMSAT-BB [email protected] wrote:
Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
I used a 2 element HF yagi for uplink and downlink (mostly because that's what was on-hand). I aimed the beam in a general North-South orientation but as I recall it didn't matter much which way it was pointed. Geeeze ... I was a youngster back then!
-- 73 de JoAnne K9JKM [email protected]
_______________________________________________ Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Steve, I successfully used a HF vertical to operate the RS satellites. A couple years ago when AO-7 would occasionally go into the V/a mode I could copy the 10 meter downlink but it was very week on the vertical I have today.
73, Scott, KA7FVV Director - KBARA kbara.orgAlternate Board of Director - AMSAT amsat.org Co-Owner WA7DRE 443.525 System Fusion Repeater Co-Owner KA7FVV 147.320 KBARA Repeater http://www.ka7fvv.net
On Wednesday, April 10, 2019, 4:55:25 PM PDT, AI9IN via AMSAT-BB [email protected] wrote:
Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
Steve AI9IN
On 2019-04-10 7:27 pm, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________
_______________________________________________ Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
When that Russian Bird was active I made some low height turnstyles for each band, worked GREAT!
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/10/2019 7:15 PM, Scott Harvey via AMSAT-BB wrote:
Steve, I successfully used a HF vertical to operate the RS satellites. A couple years ago when AO-7 would occasionally go into the V/a mode I could copy the 10 meter downlink but it was very week on the vertical I have today.
73, Scott, KA7FVV Director - KBARA kbara.orgAlternate Board of Director - AMSAT amsat.org Co-Owner WA7DRE 443.525 System Fusion Repeater Co-Owner KA7FVV 147.320 KBARA Repeater http://www.ka7fvv.net
On Wednesday, April 10, 2019, 4:55:25 PM PDT, AI9IN via AMSAT-BB <[email protected]> wrote:Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
Steve AI9IN
On 2019-04-10 7:27 pm, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________
Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Back in the day, I operated a lot of Mode K on RS. That's 15M upand 10M down. It was CW at 100 W. I had a TriBander and aimedit in the general direction of the Satellite and making contacts wasquite easy. It was often funny in those days when 15M was open andyou could hear the other stations on both 15M direct and on the 10Mdownlink. HIHI 73, Bob K8BL On Wednesday, April 10, 2019, 7:55:00 PM EDT, AI9IN via AMSAT-BB [email protected] wrote:
Did RS-12/13 require a directional antenna on uplink and/or downlink? Anybody want to speculate on what will be needed for these new HF sats?
Steve AI9IN
On 2019-04-10 7:27 pm, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________
_______________________________________________ Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
More often I'd hear folks chatting simplex on 15 meters, but on the 10m downlink. Big surprise to them when I let them know what they were doing...
I didn't do much with RS-12/13. I only had a multi-band dipole across the peak of the roof, so the pattern was whatever the pattern was. No turning the house. The good news was that neither band required Doppler adjustment. Bad news was that you were working half duplex, so there was no way to know how well the bird was hearing you. Of course, on HF, with RF bouncing all over the place between the ionosphere and the satellite itself, there was no telling where you'd end up. Best of both worlds.
Should be fun,
Greg KO6TH
R.T.Liddy via AMSAT-BB wrote:
Back in the day, I operated a lot of Mode K on RS. That's 15M upand 10M down. It was CW at 100 W. I had a TriBander and aimedit in the general direction of the Satellite and making contacts wasquite easy. It was often funny in those days when 15M was open andyou could hear the other stations on both 15M direct and on the 10Mdownlink. HIHI 73, Bob K8BL
I wonder is an NVIS antenna would be useful here. Unfortunately my AS-2259GR only goes up till 20 MHz (with tuner).
On 04/11/2019 07:27 AM, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________ Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
My 130 ft. long-wire (http://myantennas.com/wp/product/efhw-8010/) set about 4 meters off the ground is used primarily for 80m NVIS.
However, on 10m it is heard by NO-84's PSK31 repeater very well and not just directly overhead. I've gotten into it as low as 10° elevation and am almost always solid into the satellite somewhere around the 20° - 25° mark on both sides of a pass.
So, at least at 28 MHz, the signal from a low antenna certainly gets up into space.
-Scott, K4KDR
============================
On Thu, Apr 11, 2019 at 2:02 AM Hans BX2ABT via AMSAT-BB [email protected] wrote:
I wonder is an NVIS antenna would be useful here. Unfortunately my AS-2259GR only goes up till 20 MHz (with tuner).
On 04/11/2019 07:27 AM, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched
later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow.
As a reminder, DX worked via satellite counts for Satellite DXCC, but
not for other DXCC awards.
73 Ray W2RS
I worked many stations through RS12/13 and only used wire antennas (dipoles, end-fed wires, etc.), so no directional antennas were used. I seem to recall that those sats had higher than the usual 1/2 watt output as well.
73, Bob, WB4SON
On Wed, Apr 10, 2019 at 7:29 PM Ray Soifer via AMSAT-BB [email protected] wrote:
IARU has coordinated two Chinese satellites, expected to be launched later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow. As a reminder, DX worked via satellite counts for Satellite DXCC, but not for other DXCC awards.
73 Ray W2RS _______________________________________________ Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (12)
-
Bob -
Gary Thomas -
Greg D -
Hans BX2ABT -
JoAnne K9JKM -
Joe -
R.T.Liddy -
Ray Soifer -
Scott -
Scott Harvey -
skristof＠etczone.com -
Vince Fiscus, KB7ADL