[App_rpt-users] Disable Receiver for X milliseconds after TX UNKEY

[Mike]

Skyler,
I think you seek a software fix for a electronics problem.


The pulse you are getting at rx/cor  is from the switching of the TXer 
and I don't think a software delay is going to fix the issue.

Are you toggling the TX with a relay ?
Did you put a zener across the coil of the relay if so ?
You need to scope the source. Probably at the TX/PTT line / relay 
contacts, even a transistor may need changed/filtered with a cap.
Is frame ground bonded with negative ? Should it be ? Check radio specs.

Things to think about.

...mike/kb8jnm

On 8/6/2018 6:18 PM, Skyler F wrote:
> I am dealing with a system (half duplex), which sends a pulse through the
> network. I've had this question quite a bit, but never been able to word it
> right. Hope this is understandable.
> 
> This "ping pong" issue only occurs after the transmitter is unkeyed.  There
> is no way to fix this in hardware ( don't need to complicate it by going
> into technical details on how the link is setup)
> 
> RXONDELAY WORKS, but it is sort of pointless because now the beginning of
> everybody's transmission gets cut off, and is physically does not need to
> be.
> 
> We are really looking for
> 
> TX UNKEYS ------>   Disable RX ------ > Wait 1/4 second ------> Enable RX
> 
> NOT
> RXONDELAY:
> USER KEYS --->  DISABLE RX ------>  WAIT 1/4 Second -----> ENABLE RX
> 
> Is there any way to perform the function in mind? ( in either usbradio, or
> simpleusb). Has anybody here thought about this before?
> 
> Thank You,
> Skyler KDØWHB
> 
> 
> 
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