[TowerTalk] Budget 4-Pack?

[Stan Stockton]

Meant to add...Activating a relay by Rig A with one set of contacts 
disables the other rig from
 being able to activate the same relay for the same antenna WITH THE 
OTHER SET OF CONTACTS and visa
 versa.

Stan, K5GO

----- Original Message ----- 
From: "Stan Stockton" <k5go at cox.net>
To: "Tower and HF antenna construction topics." 
<towertalk at contesting.com>
Sent: Tuesday, March 02, 2010 12:08 PM
Subject: Re: [TowerTalk] Budget 4-Pack?


> Barry,
>
> Two DPDT relays for each antenna - one for each rig.  Activating a
> relay by Rig A with one set of contacts disables the other rig from
> being able to activate the same relay for the same antenna and vica
> versa.  If you are also wanting to prevent the other rig from
> transmitting at all that is another box to build.  Let me know if this
> is enough info.  If not I'll draw it.
>
> Stan, K5GO
>
> Sent from Stan's IPhone
>
> On Mar 1, 2010, at 1:40 PM, "Barry Fox" <foxbw at comcast.net> wrote:
>
>> I have two HF radios and 4 different HF antennas.  I would like to 
>> use
>> each rig on any antenna, while obviously locking out that antenna for
>> the other rig.  The commercial products 6-Pack, 8-Pack, etc are way
>> over my budget.  Anyone have a schematic for a "4-Pack" or similar
>> device they would like to share?  Obviously relays are the way to
>> go, and I can get the RF relay switching part of it on paper but
>> not the lockout logic.  Some sort of electro-mechanical exclusive-OR
>> gate array / diode matrix?  Anyone been there and done that?
>> TNX / 73,
>> Barry - W1HFN
>>
>>
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