[TowerTalk] Switching 450 ohm twinlead?

[Patrick Croft]

Before you spend $65 PER RELAY, suggest doing a little snooping about the
other various surplus houses - Fair Radio in Lima, Ohio would be one
suggestion.  Bob Grinnell's Surplus Sales is the LAST stop unless one has
more money than.....

Bests,

Patrick


>>Re all the recent posts about the RCS8V coax switch.  How is the best way
>>to remotely switch 450 ohm twinlead?  I will have 3 arrays which are fed
>>with twinlead.  I want to individually switch these to an outside remote
>>matching unit...-snip- 
>
>>Anyone have any
>>experiences or thoughts on this?  Does anyone (Antenna Mart, Dunestar,
>>etc.) make such a unit?
>
>Aloha Henry,  
>
>The relay you want and need is at Surplus Sales of Nebraska.  I just
>bought two of them for switching my four v-beams planned for set-
>up this Summer.  The perfect unit,  ceramic bases, is an Advance
>Relay,  built by the Elgin National Watch Campany (years ago!).  
>
>	Model AT/2C/115VA  DPDT
>
>The ceramic base is 2 1/2 by 3 1/2 inches by 1/4 in thick.
>
>The ribbon lead which carries each side of the 450 ohm 
>circuits are about 1/4 inch wide and spaced 2 inches inside 
>edge to inside edge of the ribbon.  Will certainly carry the
>Pout of my 87A (but don't try hot switching!).
>
>There can be no "bump" of impeadance using these that will amount
>to any problem.  Only caveat is the use of 115VAC coils,  but
>not a big deal. All the coax antenna relays etc. of the '50's
>were also using 115VAC,  E.F.Johnson used them in the KW
>Matchbox'x for example.  I paid $65 each for the relays,  and
>was thrilled when I saw the quality of construction!!
>
>Send an e-mail to Bob Grinnell at Surplus Sales, Nebraska:
>
>	grinnell@probe.net
>
>and he can tell you how many he has left,  etc.
>
>Good luck on your project!
>
>73,  Jim, KH7M
>On the Garden Island of Kauai
>
>
>
>--
>FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
>Submissions:              towertalk@contesting.com
>Administrative requests:  towertalk-REQUEST@contesting.com
>Problems:                 owner-towertalk@contesting.com
>Search:			  http://www.contesting.com/km9p/search.htm
>
>


--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:			  http://www.contesting.com/km9p/search.htm