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
----- Original Message -----
From: "Stan Stockton" <email@example.com>
To: "Tower and HF antenna construction topics."
Sent: Tuesday, March 02, 2010 12:08 PM
Subject: Re: [TowerTalk] Budget 4-Pack?
> 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" <firstname.lastname@example.org> wrote:
>> I have two HF radios and 4 different HF antennas. I would like to
>> 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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