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

[Skyler F]

I'll post my usbradio.conf when I get home in 30 minutes. Do you mind
sharing yours for a simplex gm300 node using DSP if you happen to have it?

On Wednesday, June 29, 2016, Corey Dean <n3fe at repeater.net> wrote:

> Many ways actually.  I have used it simplex like this and I have used it
> as a remote base using link2link, and at one point in time I was even using
> the steering lines and using it as a remote base. I have done this on both
> VHF and UHF.
>
> Corey  N3FE
>
> On Wed, Jun 29, 2016 at 11:26 AM, Skyler F <electricity440 at gmail.com
> <javascript:_e(%7B%7D,'cvml','electricity440 at gmail.com');>> wrote:
>
>> Huh. I am running discriminator and flat TX. Did you ever test it simplex
>> or was it only full duplex with two separate radios?
>>
>> On Wednesday, June 29, 2016, Corey Dean <n3fe at repeater.net
>> <javascript:_e(%7B%7D,'cvml','n3fe at repeater.net');>> wrote:
>>
>>> 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
>>>>
>>>>
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>>>
>>>
>>
>> --
>> Skyler Fennell
>> amsatnet.info
>> KDØWHB
>> electricity440 at gmail.com
>> <javascript:_e(%7B%7D,'cvml','electricity440 at gmail.com');>
>>
>>
>

-- 
Skyler Fennell
amsatnet.info
KDØWHB
electricity440 at gmail.com
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