[Elecraft] K3 lock out via Inhibit

[Val]

Igor,

Take a look at ACOM 2S1. This little device is intended to allow two 
transceivers to share one antenna (amplifier). Its logic locks out them by 
TX inhibit.

73, Val LZ1VB


> Don,
> I do not think so. Inhibit signal does not disable PTT. Therefore when the 
> first station starts to TX and then the second station presses PTT the 
> first station TX would get disabled by Inh right in the middle of the 
> transmission.
> I think it would be easily resolved if K3 firmware is changed so that Inh 
> signal disables PTT in at the same time.
>
> 73, Igor UA9CDC
> ----- Original Message ----- 
> From: "Don Wilhelm" <w3fpr at embarqmail.com>
> To: "Al Lorona" <alorona at sbcglobal.net>
> Cc: <elecraft at mailman.qth.net>
> Sent: Friday, March 29, 2013 6:38 AM
> Subject: Re: [Elecraft] K3 lock out via Inhibit
>
>
>> Al,
>>
>> It is all in the timing.  The first K3 to transmit will get priority.  If 
>> both try to transmit at exactly the same time (think milliseconds), then 
>> and only then will both be locked out.
>>
>> 73,
>> Don W3FPR
>>
>> On 3/28/2013 7:45 PM, Al Lorona wrote:
>>> I'm curious... how should that condition be resolved? Should the system 
>>> randomly
>>> choose one or the other station to transmit, or ...??? If so, then it 
>>> will
>>> probably need a microprocessor and it will no longer be a 'simple' 
>>> circuit.
>>>
>>> Al  W6LX