[Elecraft] Fw: Cables for the K3 to Yaesu Quadra Connections

[Jim Brassell]

Opps, forgot Elecraft.

----- Original Message ----- 
From: "Jim Brassell" <j.brassell at mchsi.com>
To: "Tom Hammond" <n0ss at embarqmail.com>
Sent: Thursday, February 26, 2009 5:16 PM
Subject: Re: [Elecraft] Cables for the K3 to Yaesu Quadra Connections


> Hey, Tom.
>
> Well, it is as if the Quadra does not recognize the K3.  It would not
> change bands and would simply pass the signal thru.  I tried it using pin
> 3 and 4 on the K3 accessory plug to key the rig (to pin 9 and 11 on the
> Quadra) and I tried the key in route you proposed.  Also, when I simply
> connected the ALC (using pins 12 and 15 on the K3 accessory plug) and the
> RF out on the K3 to Input 2 on the Quadra it simply passed the RF thru.
> Input 2 was selected on the Quadra.  Still wouldn't recognize the K3.  The
> ALC was turned on on the K3 and I played with the ALC settings on the K3
> and the Quadra with no luck.  For all the questioners, my K3's serial
> number is 2738 and has the ALC and band data pullup mods done.  I also
> went straight from the 12 VDC plug on the K3 to pin 1 and 3 on the Quadra.
>
> I really like the Quadra and it works great with the FT-2000D.  I'm going
> to keep it for sure, but I'm going to get an Ameritron ALS-600 and an
> MFJ-994 auto tuner for the K3.  I've followed Phil Salas, AD5K and his
> work with that equipment.  It sounds good and is reliable.
>
> I wish you luck with your local.  I don't have a ton of test equipment and
> I don't want to risk damaging the K3 or the Quadra.  Thanks for your
> interest and your help.  I'm also going to post this on the Elecraft
> reflector for anyone thinking about a Quadra and the K3.  I'm sure it can
> be done and I know Joe, W4TV has done it.  It just ain't working for me.
>
> I am now going to put the phones on and look for some DX as 20 closes.
> Ain't the K3 great!
>
> 73,
>
> Jim, K4ZMV
>
>
>
> ----- Original Message ----- 
> From: "Tom Hammond" <n0ss at embarqmail.com>
> To: "Jim Brassell" <j.brassell at mchsi.com>
> Sent: Thursday, February 26, 2009 4:29 PM
> Subject: Re: [Elecraft] Cables for the K3 to Yaesu Quadra Connections
>
>
>> Jim:
>>
>> What type of problems have you had?  Might help the local I'm trying to
>> get up 'n running.
>>
>> 73,
>>
>> Tom
>>
>> At 11:39 02/26/2009, you wrote:
>>>Thanks, Tom.  I tried several differenct ways to connect the Quadra with
>>>very limited success.  So, I am going to use the 2000D with the Quadra
>>>and get another amp to use with the K3.
>>>
>>>Thanks to you and Joe for your help and suggestions.  I'd be interested
>>>to know if you are successful getting Kent's rig to work.
>>>
>>>73,
>>>
>>>Jim, K4ZMV
>>>
>>>
>>>----- Original Message ----- From: "Tom Hammond" <n0ss at embarqmail.com>
>>>To: "Jim Brassell" <j.brassell at mchsi.com>
>>>Sent: Wednesday, February 25, 2009 6:14 PM
>>>Subject: Re: [Elecraft] Cables for the K3 to Yaesu Quadra Connections
>>>
>>>
>>>>Jim:
>>>>
>>>>>I have a quick question concerning the 12 VDC connection between the
>>>>>Quadra and the K3.  I want to use the RF isolated ground of the K3
>>>>>for the 12 volt connection.  My plan is to connect the RCA plug
>>>>>without a ground connection on the plug and use pin 5 on the
>>>>>accessory plug as the 12 volt ground reference.  There is an RF
>>>>>choke between K3 chassis ground and pin 5 and 12, thus isolating
>>>>>that ground connection.  I don't think that will be a problem.  Does
>>>>>anyone have another view?
>>>>>
>>>>>Thanks for your time and any comment.
>>>>
>>>>I (just) made up a cable (actually, 'cables') for Kent, K9ZTV, for his
>>>>Quadra
>>>>and K3. Unfortunately, they've not been plugged in yet, but with luck,
>>>>will
>>>>be later tonight.
>>>>
>>>>I'm hereto attaching a graphic of what I did and how I did it.
>>>>
>>>>Good luck,
>>>>
>>>>Tom Hammond   N0SS
>>>>
>>>>p.s.
>>>>
>>>>I think you should be able to use the single-wire _12VDC connection AS
>>>>LONG AS
>>>>you have another solid ground between the K3 and the Amp... personally
>>>>though,
>>>>I'd use RG-174 and include an integral ground.
>>>>
>>>>
>>
>>
>