[arm-allstar] Tx glitch

[David McGough]

Hi Roger,

I don't think I've experienced this issue with Maxtrac radios, I expect
it's related to radio-specific programming.  I'll experiment with a radio
here.

What model Maxtrac radios are you using, where this issue shows up?


73, David KB4FXC



On Thu, 22 Oct 2020, "[UTF-8] Roger Coudé via ARM-allstar" wrote:

> Some radio do not like glitches on the PPT line.As an example, Motorola 
MAXTRAC will not transmit if PTT comes too fast after a last 
transmission.I have a few repeaters running with two MAXTRAC radios and 
once in a while the Tx radio was not transmitting until a sufficient 
quiet period occurs. I have designed a filter that blocks ptt input for 
some 100-500 ms delay after the end of a transmission.It would have been 
much simplier to have a software implementation.TXondelay???Similar to 
the existing RXondelay, trigered also by the end of TX, and applied only 
if last TX is within delay period.

73 Roger VE2DBE