[Elecraft] 2 radios, 1 antenna... finally a prototype!

[JEAN-FRANCOIS MENARD]

Ho ! Thank to Jack also. I was't know... :-( ;-)

Check this one...

I put my K2 on one connector and my FT-817 on the other. I found  
something interresting.... When I have my K2 on 80m and my FT-817 on  
40m, everything is OK. But when I put my FT-817 on the same band or  
on a band lower than 80m... i.e. 160M, I loose approx. 3db on receive  
on my K2.

I checked this with XG1 oscillator.... When indicating S9 on my K2,  
when I switch the FT-817 on the same band, I loose 1 S unit on the K2  
instantly....

Any idea ?

Le 05-11-19 à 21:23, Don Wilhelm a écrit :

> Yes folks, Jack and I collaborated on the design of this one.  I  
> started
> with a few logic gates, and Jack kept saying 'do it with no active  
> devices -
> anyway, you can see the result in Jean-Francois website and judge for
> yourself.
>
> Since Jean-Francois gave me credit in his posts, I thought I should  
> pass
> along extra credit where it is due, and Jack deserves it.
>
> BTW, if I ever get both my K2s to the operating position instead of  
> one in
> th eworkshop and the other for operating, I will be using this  
> arrangement
> myself - not fully SO2R, but a reasonable compromise suitable for my
> operating.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>
>>
>> There is one important step in the construction of the circuit that
>> should make it work well.
>>
>> Now it is important to take this step...
>>
>> What is the step?
>>
>> Contact W6FB in the Phone Sweepstakes - I need the VA2 QSO!
>>
>> :-) :-) :-)
>>
>> Good luck making it run. Don and I had fun collaborating on that  
>> one...
>>
>> On Nov 19, 2005, at 3:02 PM, JEAN-FRANCOIS MENARD wrote:
>>
>>> Hi,
>>>
>>> I finally did a first prototype of an interface to link two K2/
>>> KPA100 on one multi-band HF antenna using Don W3FPR schematic. For
>>> my first "from scratch" project, it is not too bad. I first began
>>> to do a PCB. I used two fast SPDT 16A relays from Omron and SO-239
>>> connectors are Amphenol.
>>>
>>> I will try it tonight.... But on the bench test, everything was
>>> working fine... Maybe I will need to put a few caps to filter some
>>> RF, I'm not sure.... I will tell you later tonight. This is my
>>> first prototype version... My « main goal » is to have a interface
>>> like this one, but also one mic and one paddle for 2 radios.
>>>
>>> Unfortunatly, I forgot to take picture of my PCB. But I will put
>>> Don's schematic on my website this week.
>>>
>>> Take a look... http://homepage.mac.com/jfmenard/PhotoAlbum55.html
>>>
>>> 73
>>>
>>> P.S. Many thanks to Don W3FPR for his help. ;-)
>>>
>>> =============================================
>>> /¯\/¯\/¯\/¯\/¯\/¯\   JEAN-FRANCOIS MENARD
>>>  V  A  2  V  Y  Z
>>> \_/\_/\_/\_/\_/\_/
>>>
>>> FISTS #11896
>>> Elecraft K2 #4130
>>> Elecraft KX1 #999
>>>
>>> http://homepage.mac.com/jfmenard
>>> =============================================
>>>
>>>
>>>
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>>
>>
>> -Jack Brindle, W6FB
>> ===================================================================== 
>> ==
>>
>>
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>