[TowerTalk] M2 20M5 SWR - WX0B SIXPACK

[john at kk9a.com]

One thing for sure, if you use a band decoder, diodes to also switch a 
bandpass filter and have a reasonably long cable to the tower you will not 
have 12v at the relay and you will have problems pulling in the contact.  I 
was not aware of the Array Solutions until September 2008, and by then I had 
already stretched out my springs a little so they pulled in easier.  I don't 
recall seeing any coil voltage markings on the relay so it's an interesting 
theory Rick.  I have two SixPaks and they have both worked very well for me 
after modifying them.

John KK9A / P40A



----- Original Message ----- 
From: "Richard (Rick) Karlquist" <richard at karlquist.com>
To: <john at kk9a.com>
Cc: <TOWERTALK at contesting.com>; <cx6vm.jorge at adinet.com.uy>
Sent: Friday, January 01, 2010 2:53 PM
Subject: Re: [TowerTalk] M2 20M5 SWR - WX0B SIXPACK




john at kk9a.com wrote:

>
> I have all setup properly, according to sixpack manual it´s connected to a
> reliable 13.8V power supply (same Kenwood PS I used to power the radio) 
> and
> not to a 12V wall plug supply.
>

This whole relay coil voltage discussion makes me wonder whether these
relays are really "12V" relays, and not 24V relays.  True 12V relays
will typically pull in at 6 to 8V (they just take longer) and will
certainly pull in at 12V every time.  OTOH, 24V relays will often
sort of work from a 12V supply, especially if it is really 13.8V.
24V relays are much more common and often available at reduced prices.
The relays could also be mismarked.  I bought dozens of relays marked
"24V" that turned out to be 6V relays.  The seller did not realize
this and said he got them surplus or on the gray market.  The relays
were worth far more to me as 6V relays than 24V relays, so I was
happy.

Supposedly these relays are custom made.  In that case, it should be
possible to wind the coil so it works on, say 10V, so that in any
nominally 12V system, it would always function.

Rick N6RK