[Heathkit] SB-220 Numbers
Jim Brannigan
jbrannig at optonline.net
Tue Jul 31 15:48:08 EDT 2007
Did you try the BAMA site for the manual?
Jim
>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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