[Heathkit] Heathkit diodes 57-27 and ALC.

[Tom]

I got  mine on EBay about a year ago. The producer of the CD took the 1984 
Master Parts list, which was printed on green and white computer paper, and 
scanned all of the pages in PDF format. I don't know who it was nor have I 
noticed them for sale recently either.

Tom K3TVC


----- Original Message ----- 
From: "Bwana Bob" <wb2vuf at gti.net>
To: "Tom Chesek" <tchesek at epix.net>
Cc: <Heathkit at mailman.qth.net>
Sent: Monday, March 05, 2007 7:27 PM
Subject: Re: [Heathkit] Heathkit diodes 57-27 and ALC.


> Where can I get a Heath Master Parts List?
>
> Thanks.
>
> 73,
>
> Bob WB2VUF
>
> Tom Chesek wrote:
>> Heath's master parts list says 1N2071.
>>
>> Tom K3TVC
>>
>>
>> ----- Original Message -----
>> From: "Kenneth G. Gordon" <kgordon2006 at verizon.net>
>> To: <Heathkit at mailman.qth.net>
>> Sent: Saturday, March 03, 2007 2:40 PM
>> Subject: [Heathkit] Heathkit diodes 57-27 and ALC.
>>
>>
>>> Does anyone know what type of diode the Heathkit part number 57-27
>>> is, and what its ratings are? PIV, current, etc?
>>>
>>> I know it is a silicon diode, but that is as much as I can find out 
>>> about
>> it.
>>> Three of these are used in the HW/SB transceivers in the ALC circuit. I
>>> think at least one of mine is damaged as I have no ALC action at all in
>>> any SSB mode.
>>>
>>> When I adjust the MIC/CW LEVEL control on CW with the key down,
>>> and with the meter in the ALC position, I can swing the meter from
>>> somewhat below 0 to full-scale, depending on where I set the control,
>>> but nothing whatever shows up on the meter when in voice mode,
>>> except an occasional blip upwards from zero.
>>>
>>> Thanks,
>>>
>>> Ken Gordon W7EKB
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>>
>>
>> _______________________________________________
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>