Input to tnc
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I have been experiencing a continuing problem with aprs that I do not seem to be getting out enough, even with full 50w power. I am using the D700A in tnc pkt mode. I am only able to get digipeated by one station very close to me, although I do have line of sight to others.
I don't know if "gain" is the right word but is there any way with the D700a of changing the amount of gain into the tnc? I think I might be overdriving the tnc or maybe under driving it. I looked in the manuals but could not find anything. I will be looking next at the audio waveform on a scope to see what it looks like. Thanks in advance. Joe VA3JLF
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qp2trz
Hi Joe,
Let’s start with the following question... Is the D700 in APRS mode wIth the GPS flashing? Joey VA3GOC
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Joseph LaFerla
no Joey. I am running the kenwood in tnc-pkt mode using yaac. I do not have a gps.
Joe VA3JLF
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qp2trz
Hi Joe, I'm familiar with YAAC. Are you trying to run a digipeater? If the D700 is close to the 710 in functionality shouldn't the TNC settings be set to APRS mode? I can't quite wrap my head around your end result. Oh, the cabling. Anyway please enlighten me. Then we'll go off list. Joey VA3GOC
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Joseph LaFerla
HI Joey
No I am not trying to run a digipeater. According to the yaac manual, putting the d700 in aprs mode only allows for receiving packets because the d700 is not able for whatever reason to transmit. If I want to transmit, according to the manual, I have to put the tnc in packet mode and use a serial tnc interface on yaac. I have not tried to connect the d700 in aprs mode in yaac. I know that the d700 has a separate tnc and the d710 has an integrated tnc. I have connected everything as it should be. My antenna is a dual band and it checks out with my analyzer. It is at about 35 feet and that is the only thing that may be the issue, I have a fellow coming over to do some antenna work so I will try and get that antenna higher up. Anyway, do you want to go off list now? Joe VA3JLF
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Thomas Moss
I ran into a similar issue where we finally determined the radio drifted off frequency enough the packet was effected but not noticed on voice. 73 Thomas KC5KCT
On Mon, Sep 28, 2020, 7:17 PM Joseph LaFerla <joe@...> wrote: no Joey. I am running the kenwood in tnc-pkt mode using yaac. I do not have a gps.
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qp2trz
Hi Joe, Then I have reached my limit. I own D710s and was running YAAC as the receiver of off-air APRS packets and independent GPS data. Does the D700 have audio gain settings as does the D710? Perhaps low deviation out of the 700? Wish I could help more. List? Joey VA3GOC
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Joseph LaFerla
Hi Joey
Thanks for getting back. Actually that was the question I had that I perhaps did not phrase correctly. I could not find any audio gain settings in the D700. I am surprised that the 710 has audio gain settings but not the D700. However I obtained a deviation meter the other day and, if I read it correctly, it gave me about 3 Khz. I went into the D700 alignment menu and raised the deviation closer to 5. I am today going to check on my packet path.
What do you mean by list? Should we put this back to the list? I will post my deviation findings on the list.
Joe VA3JLF
Sent from Mail for Windows 10
From: Joseph Shynn
Sent: September 30, 2020 5:07 AM To: tmd700a Subject: Re: [TMD700A] Input to tnc
Hi Joe, Then I have reached my limit. I own D710s and was running YAAC as the receiver of off-air APRS packets and independent GPS data. Does the D700 have audio gain settings as does the D710? Perhaps low deviation out of the 700? Wish I could help more. List? Joey VA3GOC
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Joseph Shynn
Hi Joe, Looking at your map view I don’t see any iGates anywhere near you. How are you getting to the interweb thingy? Joey
On Sep 30, 2020, at 07:46, Joseph LaFerla <joe@...> wrote:
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