{Collins} Re: Heath Power supply



Wire a 12VAC at 3 amp filament transformer in series with the existing 12 V 
output from the Heath supply and wire the KWM-2 plug for 24 V filament 
operation.   I mounted the transformer under the Heath power supply chassis 
by moving a couple components to make room.  That way you don't overload the 
heath filament output which is rated for around 8 amps.  (The KWM-3 needs 11 
amps at 12 V but less than 3 ant 24 V.)

73 Charlie k3ICH


----- Original Message ----- 
From: <johnbess@xxxxxxxxxxxx>
To: <kc21130@xxxxxxxxxxx>; <collins@xxxxxxxxxxxxx>
Sent: Tuesday, August 08, 2006 3:03 AM
Subject: {Collins} Re: Heath Power supply


> Carl and all,
>
> The problem of operating the KWM-2 or A from the Heath supply is not the 
> B+ but the filament current the Heath supply is designed to supply. The 
> KWM-2(A) is more than the supply was designed for. (Check it out)
>
> The Heath supply will work great with any 32S transmitter though.
>
> I hope this helps,
>
> John, WA5VVT, CCA Board member and Collins Radio service for over 35 
> years.
>
> -----Original Message-----
> From: Keith Carlsen <kc21130@xxxxxxxxxxx>
> To: collins@xxxxxxxxxxxxx
> Sent: Tue, 08 Aug 2006 02:09:35 +0000
> Subject: {Collins} Re: Heath Power supply
>>On the Heath remailer there was some info about using a HP 23 power suppl=
>>y
>>on a KWM-2 .>Carl W9TAD
> I would think the Main B+ of the S-line gear would work fine on either 250
> or 300 volts but to be perfectly safe I would choose the 250 volt setting. 
> I
> can't imagine any harm but performance could be slightly affected 
> especially
> on transmit. If you have a service monitor (you should, or be a member of 
> a
> club that does) you could run a proof of performance test this way.
>
>
> Sponsored by the Collins Collectors Association 
> http://www.collinsradio.org
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Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central






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