[App_rpt-users] Gm300 have to set the rxondelay very high

[Corey Dean]

I have never had this issue and I run mine on DSP.  Discriminator on rx and
flat tx audio.

Corey  N3FE

On Wed, Jun 29, 2016 at 11:20 AM, Skyler F <electricity440 at gmail.com> wrote:

> If I use software PL/CSQ decoding, I was getting reports of something
> coming back from the node after they unkey.
>
> Turning RXondelay up to about 6 (6 increments of 25ms) it worked great
> until I tuned to the bottom of the 2-meter band and I had to turn it all
> the way to 15 to avoid problems. It's fine unless someone quick Keyes and
> then I will loose the beginning of their voice.
>
> This is a simplex GM300 node, so I am guessing there is a lack of high
> frequency noise immediately after I unkey. What I don't get is why it is
> worse at the bottom end of the VHF band. I guess the VFO is sick down there
> and takes longer to activate?
>
> On my UHF GM300, I can get away with rxondelay set to 5 at 446.000. I
> haven't tested lower, but I won't be transmitting below 445.0
>
> There is a variable inductor that I found near the receiver chip which
> actually improved tuning it from what I was initially getting, needing to
> set rxondelay all the way up to 25. (It's near the squelch pot)
>
> I am going to use COR  from the radio anyway so I won't have the
>  problem, but I was planning on modding one for 9600 baud which could never
> deal with the horrible TX/RX switching time that I am getting.
>
> Any experience with this issue here? Also, It's annoying that I have to
> run rxondelay, I wish it could just ignore the receiver immediately after
> the transmitter drops, no other time. Is there any other setting?
>
> 73
> Skyler KD0WHB
>
>
>
> --
> Skyler Fennell
> amsatnet.info
> KDØWHB
> electricity440 at gmail.com
>
>
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at ohnosec.org
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit
> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down
> to the bottom of the page. Enter your email address and press the
> "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email
> confirmation. If you have trouble unsubscribing, please send a message to
> the list detailing the problem.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.keekles.org/pipermail/app_rpt-users/attachments/20160629/be25160c/attachment.html>