Satellite Connection
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
_______________________________________________ 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
If he can hear the FM sat SO-50 he shouldn't have to worry about doppler. He doesn't have to find himself like on an SSB sat's passband.
Rupert, can you get into terrestrial repeaters? Verify in a simple way that transmit works. On Mar 17, 2016 4:14 PM, "Greg" gjd1958@verizon.net wrote:
Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
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
Hi John,
I'll give that a try, either that or a walk round test with a hand-held...
Cheer
RH / G0TKZ On 17 Mar 2016 8:23 p.m., "John Brier" johnbrier@gmail.com wrote:
If he can hear the FM sat SO-50 he shouldn't have to worry about doppler. He doesn't have to find himself like on an SSB sat's passband.
Rupert, can you get into terrestrial repeaters? Verify in a simple way that transmit works. On Mar 17, 2016 4:14 PM, "Greg" gjd1958@verizon.net wrote:
Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
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
Good point re: SO-50.
G MVF
On Mar 17, 2016, at 4:23 PM, John Brier johnbrier@gmail.com wrote:
If he can hear the FM sat SO-50 he shouldn't have to worry about doppler. He doesn't have to find himself like on an SSB sat's passband.
Rupert, can you get into terrestrial repeaters? Verify in a simple way that transmit works.
On Mar 17, 2016 4:14 PM, "Greg" gjd1958@verizon.net wrote: Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
_______________________________________________ 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
Hi All,
Thought I would update on my current situation, having been through a few "hoops" to get to where I am now !
So the bottom line is, thankfully, I am now active on the SATS and have nearly a dozen QSO's in the log..!
Following up the comments below, I did a number of things to the stations to finally get working, these included, setting the correct CTCSS tones on the 847, realigning the azimuth on the rotator, it was around 20 degress out - all of which helped....but the biggest impact was the 847, its been in for repair under warrenty twice now, thankfully, so far all looks ok now. Two issues were identified:
Frequency and control error on VHF/UHF bands, a couple of chips were replaced, and the killer one was, whenever I switched to SAT mode, the TX output would drop to nearly zero on UHF, whilst on VHF power was also reduced and the CTCSS tones were corrupted.....apparently from the dealer repair I was told both issues were known problems.
Thankfully, all now resolved - and up and running....!
As I finally get my head round the station / Doppler / SatPC32, I may post a couple more queries....thanks for your tips and advice here...!
Cheers RH / G0TKZ
On 17/03/2016 20:32, Greg wrote:
Good point re: SO-50.
G MVF
On Mar 17, 2016, at 4:23 PM, John Brier johnbrier@gmail.com wrote:
If he can hear the FM sat SO-50 he shouldn't have to worry about doppler. He doesn't have to find himself like on an SSB sat's passband.
Rupert, can you get into terrestrial repeaters? Verify in a simple way that transmit works.
On Mar 17, 2016 4:14 PM, "Greg" gjd1958@verizon.net wrote: Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
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
Hi Greg,
It's difficult to say, I can track the Doppler of the received signal ok, but as I've never yet received my own signal i'm not sure if that's a problem...
I've tried whilst on a good pass adjusting the sub tune - but I never find my signal.
My initial thoughts were either a sub tune issue, or perhaps a problem with the antenna alignment..?
Cheers
RH / G0TKZ On 17 Mar 2016 8:14 p.m., "Greg" gjd1958@verizon.net wrote:
Are you having issues adjusting for Doppler?
greg N3MVF
On Mar 17, 2016, at 3:16 PM, Rupert Hamblin rupert.hamblin@gmail.com wrote:
Hi All,
Would be grateful for any advice or your thoughts on the following...!
Ok, so I have my station virtually completed now. I have the rotator setup correctly and with the LVB Tracker interface unit and SatPC32 now tracking SATs correctly (it appears). I have a 4 ELE (2M) and 9 ELE (70cm) on the rotator.
I can receive very good copy of downlinks from quite low passes on both 2M & 70CM, and I have recently had the FT-847 lab repaired and tested on output - which I know are working ok.
The problem I have is - whichever satellite i try to work, low pass / high pass, SSB or FM, high power or low power - I am unable to hear my own signal on the downlink and hence so far have no QSO's ....Any suggestions or clues as to what I may be doing wrong or have setup incorrectly...?
Would appreciate any clues / tips here ! :-)
Cheers
RH / G0TKZ
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 (3)
-
Greg -
John Brier -
Rupert Hamblin