[Heathkit] SB-220 Numbers

[Bob McGraw - K4TAX]

A friend has recently acquired a Heath SB-220.  Lacking access to the 
manual, what the numbers for plate voltage, plate current idle and plate 
current at full power and grid current.

Thanks
73
Bob, K4TAX


----- Original Message ----- 
From: "Rick Brashear" <rickbras at airmail.net>
To: "'Peter Markavage'" <manualman at juno.com>; <heathkit at mailman.qth.net>
Sent: Tuesday, July 31, 2007 2:24 PM
Subject: RE: [Heathkit] Amp Keying Interface?


> Yeah Pete, but you don't get to hear the KERCHUNK!  That's the part I 
> like.
>
> Rick/K5IAR
>
>
> Yuck! Keying circuit of whatever... keying relay... keying relay - Sounds
> like a telephone switching office design. Solid-state switching is quick,
> quiet, and reliable.
>
> Pete, wa2cwa
>
> On Tue, 31 Jul 2007 14:35:56 -0400 john <johnmb at nc.rr.com> writes:
>> Yep! Might be nice to put a diode across the coil to clamp the coil
>> when
>> the 12V is removed.
>>
>> John K5MO
>>
>>
>> At 02:05 PM 7/31/2007, Bob McGraw - K4TAX wrote:
>> >Be advised that Harbach Electronics is closed due to health reasons
>> and
>> >not accepting orders at this time.
>> >
>> >A simple keying interface is a 12VDC coil relay with N.O. contacts
>>
>> >available from Radio Shack.  Enclose same in a small "project box"
>> with a
>> >couple of connectors of your choice.  The 12V is from the FT-847
>> and the
>> >normal keying ckt and the N.O. contacts go to the SB-200.  The
>> project
>> >should cost about $6.00 for all the parts and then have the fun of
>>
>> >building something that works.
>> >
>> >73
>> >Bob, K4TAX
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