Re: [amsat-bb] IC-910H no audio on SO-50 downlink
All,Has anyone else had the problem of not hearing your own downlink when working SO-50? In the past I was able to hear myself, but lately I cannot not. I don't know if I change some setting or that the Icom is going bad. Thanks for any help. I appreciate it in advance. Jim, Ke4kol
Jim,
With SO-50, especially, this is very common. The 2m uplink has a harmonic very close to the downlink, which if not filtered out, can wipe out your local downlink whenever you are transmitting. I'm not familiar with the 910 enough to know how well it does at this, though.
You were getting in fine this morning, though (not sure if you copied my QSL)!
--Roy K3RLD
The 910 is generally very effective at filtering out harmonics from the transmitter. However, harmonics can be generated beyond the transmitter by poor connections, bad feedlines, or a damaged antenna. Check your entire antenna system to make sure there are not any problems.
73,
Paul, N8HM
On Fri, Mar 27, 2020 at 12:59 PM Roy Dean via AMSAT-BB [email protected] wrote:
All,Has anyone else had the problem of not hearing your own downlink when working SO-50? In the past I was able to hear myself, but lately I cannot not. I don't know if I change some setting or that the Icom is going bad. Thanks for any help. I appreciate it in advance. Jim, Ke4kol
Jim,
With SO-50, especially, this is very common. The 2m uplink has a harmonic very close to the downlink, which if not filtered out, can wipe out your local downlink whenever you are transmitting. I'm not familiar with the 910 enough to know how well it does at this, though.
You were getting in fine this morning, though (not sure if you copied my QSL)!
--Roy K3RLD _______________________________________________ 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
Paul, Roy,Thanks the replies. In the past I have always heard myself. So there must be something gone wrong with my system. I will have to check out everything. Thanks again for the suggestions.73s, Jim, Ke4kol
On Friday, March 27, 2020, 01:04:41 PM EDT, Paul Stoetzer via AMSAT-BB [email protected] wrote:
The 910 is generally very effective at filtering out harmonics from the transmitter. However, harmonics can be generated beyond the transmitter by poor connections, bad feedlines, or a damaged antenna. Check your entire antenna system to make sure there are not any problems.
73,
Paul, N8HM
On Fri, Mar 27, 2020 at 12:59 PM Roy Dean via AMSAT-BB [email protected] wrote:
All,Has anyone else had the problem of not hearing your own downlink when working SO-50? In the past I was able to hear myself, but lately I cannot not. I don't know if I change some setting or that the Icom is going bad. Thanks for any help. I appreciate it in advance. Jim, Ke4kol
Jim,
With SO-50, especially, this is very common. The 2m uplink has a harmonic very close to the downlink, which if not filtered out, can wipe out your local downlink whenever you are transmitting. I'm not familiar with the 910 enough to know how well it does at this, though.
You were getting in fine this morning, though (not sure if you copied my QSL)!
--Roy K3RLD _______________________________________________ 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
Did you accidentally turn on the CTCSS decode? I dont know if SO50 passes the tone to its transmit signal or not.73 John W5TD Sent via the Samsung Galaxy A10e, an AT&T 4G LTE smartphone -------- Original message --------From: ke4kol via AMSAT-BB [email protected] Date: 3/27/20 12:44 PM (GMT-06:00) To: Roy Dean [email protected], Paul Stoetzer [email protected] Cc: AMSAT BB [email protected] Subject: Re: [amsat-bb] IC-910H no audio on SO-50 downlink Paul, Roy,Thanks the replies. In the past I have always heard myself. So there must be something gone wrong with my system. I will have to check out everything.Thanks again for the suggestions.73s, Jim, Ke4kol On Friday, March 27, 2020, 01:04:41 PM EDT, Paul Stoetzer via AMSAT-BB [email protected] wrote: The 910 is generally very effective at filtering out harmonics fromthe transmitter. However, harmonics can be generated beyond thetransmitter by poor connections, bad feedlines, or a damaged antenna.Check your entire antenna system to make sure there are not anyproblems.73,Paul, N8HMOn Fri, Mar 27, 2020 at 12:59 PM Roy Dean via AMSAT-BB[email protected] wrote:>> >> > All,Has anyone else had the problem of not hearing your own downlink when> > working SO-50? In the past I was able to hear myself, but lately I cannot> > not. I don't know if I change some setting or that the Icom is going bad.> > Thanks for any help. I appreciate it in advance.> > Jim, Ke4kol>>> Jim,>> With SO-50, especially, this is very common. The 2m uplink has a harmonic> very close to the downlink, which if not filtered out, can wipe out your> local downlink whenever you are transmitting. I'm not familiar with the> 910 enough to know how well it does at this, though.>> You were getting in fine this morning, though (not sure if you copied my> QSL)!>> --Roy> K3RLD> _______________________________________________> 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_____________________________... via [email protected]. AMSAT-NA makes this open forum availableto all interested persons worldwide without requiring membership. Opinions expressedare 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%C2%A0 _______________________________________________Sent via [email protected]. AMSAT-NA makes this open forum availableto all interested persons worldwide without requiring membership. Opinions expressedare 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
In case you haven't already tried it, try your lowest power setting too.
73, John Brier KG4AKV
On Fri, Mar 27, 2020, 14:00 af5cc2 via AMSAT-BB [email protected] wrote:
Did you accidentally turn on the CTCSS decode? I dont know if SO50 passes the tone to its transmit signal or not.73 John W5TD Sent via the Samsung Galaxy A10e, an AT&T 4G LTE smartphone -------- Original message --------From: ke4kol via AMSAT-BB < [email protected]> Date: 3/27/20 12:44 PM (GMT-06:00) To: Roy Dean < [email protected]>, Paul Stoetzer [email protected] Cc: AMSAT BB < [email protected]> Subject: Re: [amsat-bb] IC-910H no audio on SO-50 downlink Paul, Roy,Thanks the replies. In the past I have always heard myself. So there must be something gone wrong with my system. I will have to check out everything.Thanks again for the suggestions.73s, Jim, Ke4kol On Friday, March 27, 2020, 01:04:41 PM EDT, Paul Stoetzer via AMSAT-BB [email protected] wrote: The 910 is generally very effective at filtering out harmonics fromthe transmitter. However, harmonics can be generated beyond thetransmitter by poor connections, bad feedlines, or a damaged antenna.Check your entire antenna system to make sure there are not anyproblems.73,Paul, N8HMOn Fri, Mar 27, 2020 at 12:59 PM Roy Dean via AMSAT-BB[email protected] wrote:>> >> > All,Has anyone else had the problem of not hearing your own downlink when> > working SO-50? In the past I was able to hear myself, but lately I cannot> > not. I don't know if I change some setting or that the Icom is going bad.> > Thanks for any help. I appreciate it in advance.> > Jim, Ke4kol>>> Jim,>> With SO-50, especially, this is very common. The 2m uplink has a harmonic> very close to the downlink, which if not filtered out, can wipe out your> local downlink whenever you are transmitting. I'm not familiar with the> 910 enough to know how well it does at this, though.>> You were getting in fine this morning, though (not sure if you copied my> QSL)!>> --Roy> K3RLD> _______________________________________________> 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_____________________________... via [email protected]. AMSAT-NA makes this open forum availableto all interested persons worldwide without requiring membership. Opinions expressedare 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 availableto all interested persons worldwide without requiring membership. Opinions expressedare 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
participants (5)
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af5cc2 -
John Brier -
ke4kol -
Paul Stoetzer -
Roy Dean