I'm having a strange issue with my 821. Periodically I lose all sensitivity, which I've particularly noticed on 2m SSB. I can attach and detach an antenna with no change in the noise level, and can't hear anything in the receiver (like the XW-2* beacons, or the AO-73 telemetry). Resetting the radio seems to fix it.
It doesn't appear to be affecting 70cm, although I haven't had much chance to test that (there's not always a mode j sat up at the same time as a mode b one, and when it happens I'm normally just trying to reset the radio as fast as I can do I can operate the pass). Has anyone experienced anything like this before?
73,
- Matthew kk4fem
Sent from my iPhone
Hi Matthew, On 2m when on FM mode do you hear the white noise when you open the squelch. 73 Nitin [VU3TYG]
From: Matthew Stevens matthew@mrstevens.net To: amsat-bb@amsat.org Sent: Saturday, 10 June 2017 7:06 PM Subject: [amsat-bb] IC-821H problems
I'm having a strange issue with my 821. Periodically I lose all sensitivity, which I've particularly noticed on 2m SSB. I can attach and detach an antenna with no change in the noise level, and can't hear anything in the receiver (like the XW-2* beacons, or the AO-73 telemetry). Resetting the radio seems to fix it.
It doesn't appear to be affecting 70cm, although I haven't had much chance to test that (there's not always a mode j sat up at the same time as a mode b one, and when it happens I'm normally just trying to reset the radio as fast as I can do I can operate the pass). Has anyone experienced anything like this before?
73,
- Matthew kk4fem
Sent from my iPhone _______________________________________________ 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, I do. Interestingly, I have not had any problems with FM in either mode J or B. The other day I worked AO-85 successfully, and immediately switched to EO-79, 2m SSB downlink. I heard no telemetry or anything else. Then I pointed the antenna over towards some nearby powerlines, which normally create a lot of annoying static on 2m - nothing heard. I removed the coax from the 2m jack, and observed a drop in the noise level (very slight), reconnected the coax and checked over towards the power lines again, with the same result. I wasn't hearing anything on 2m SSB, after I had, minutes before, had no issues hearing on 2m FM.
I'm glad I have other radios to use in the meantime, while I try to figure this out :-)
73
- Matthew kk4fem
On Sun, Jun 11, 2017 at 2:05 AM, Nitin Muttin vu3tyg@yahoo.co.in wrote:
Hi Matthew,
On 2m when on FM mode do you hear the white noise when you open the squelch.
73 Nitin [VU3TYG]
From: Matthew Stevens matthew@mrstevens.net To: amsat-bb@amsat.org Sent: Saturday, 10 June 2017 7:06 PM Subject: [amsat-bb] IC-821H problems
I'm having a strange issue with my 821. Periodically I lose all sensitivity, which I've particularly noticed on 2m SSB. I can attach and detach an antenna with no change in the noise level, and can't hear anything in the receiver (like the XW-2* beacons, or the AO-73 telemetry). Resetting the radio seems to fix it.
It doesn't appear to be affecting 70cm, although I haven't had much chance to test that (there's not always a mode j sat up at the same time as a mode b one, and when it happens I'm normally just trying to reset the radio as fast as I can do I can operate the pass). Has anyone experienced anything like this before?
73,
- Matthew kk4fem
Sent from my iPhone _______________________________________________ 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 Matthew, I feel this could be related to the "Ribbon Cable contact issue ". There is one ribbon connector behind the S meter which goes to one of the boards. Disconnect the cable by pulling on the connector socket clean the pins on the cable with a rubber eraser (soft) and fix back the connector. 73 Nitin [VU3TYG]
From: Matthew Stevens matthew@mrstevens.net To: Nitin Muttin vu3tyg@yahoo.co.in Cc: "amsat-bb@amsat.org" amsat-bb@amsat.org Sent: Saturday, 17 June 2017 12:18 AM Subject: Re: [amsat-bb] IC-821H problems
Yes, I do. Interestingly, I have not had any problems with FM in either mode J or B. The other day I worked AO-85 successfully, and immediately switched to EO-79, 2m SSB downlink. I heard no telemetry or anything else. Then I pointed the antenna over towards some nearby powerlines, which normally create a lot of annoying static on 2m - nothing heard. I removed the coax from the 2m jack, and observed a drop in the noise level (very slight), reconnected the coax and checked over towards the power lines again, with the same result. I wasn't hearing anything on 2m SSB, after I had, minutes before, had no issues hearing on 2m FM.
I'm glad I have other radios to use in the meantime, while I try to figure this out :-)
73
- Matthew kk4fem
On Sun, Jun 11, 2017 at 2:05 AM, Nitin Muttin vu3tyg@yahoo.co.in wrote:
Hi Matthew,
On 2m when on FM mode do you hear the white noise when you open the squelch.
73 Nitin [VU3TYG]
From: Matthew Stevens matthew@mrstevens.net To: amsat-bb@amsat.org Sent: Saturday, 10 June 2017 7:06 PM Subject: [amsat-bb] IC-821H problems
I'm having a strange issue with my 821. Periodically I lose all sensitivity, which I've particularly noticed on 2m SSB. I can attach and detach an antenna with no change in the noise level, and can't hear anything in the receiver (like the XW-2* beacons, or the AO-73 telemetry). Resetting the radio seems to fix it.
It doesn't appear to be affecting 70cm, although I haven't had much chance to test that (there's not always a mode j sat up at the same time as a mode b one, and when it happens I'm normally just trying to reset the radio as fast as I can do I can operate the pass). Has anyone experienced anything like this before?
73,
- Matthew kk4fem
Sent from my iPhone _______________________________________________ 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 (2)
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Matthew Stevens -
Nitin Muttin