[chirp_users] Chirp Data transfer

[Ken Simpson, W8EK]

First, I did not know that the TxD and RxD lines were tied together. 
That means we are only using one pin of the 3 active pins, plus 
ground. I find that once I take the cable out of the radio, I DO get 
echo.  That would insinuate that the data line is being grounded when 
plugged into the radio, so that no echo would come back.

It is certainly looking like a hardware problem, likely with the plug 
not going all the way in.  Now the big question -- do I want to 
perform surgery on a VX-3?

I agree that we can rule out the chirp program at this point, and I 
certainly thank you for the efforts to get things going.

Thanks.

73,

Ken, W8EK


Dan Smith wrote, On 7/4/2011 6:41 PM:
>> Echo in HyperTerminal is a setting:  File>>  Properties>>  Settings>>
>> ASCII Setup>>  "Echo characters typed locally".
> 
> Local echo should be *disabled* and you should *still* see echo.
> 
> The echo comes from the fact that these radios use a single pin for 
> transmit and receive, and thus the TX and RX lines are tied together 
> inside the radio. Since you see no echo and no data when you try to 
> initiate the clone, something is wrong with hardware. Since you have two 
> cables, it sure sounds like the radio. Since you said you tried two 
> radios, it sounds like the serial port. Since you tried two serial 
> ports... well, not sure what to say :)
> 
> However, we can rule out CHIRP here since you aren't getting the 
> beginning of the clone message from the radio.
>