[Hallicrafters] sx16

[Dennis DuVall]

Bob, bj,

Is it the B+ bypass cap on the primary of the audio xformer driving the audio output amp by any chance?  If so, a 8 mfd 450 volt unit was used in the later SX-17 and 8 or 10 mfd would work just fine in the-16 as well.

Dennis D.  W7QHO
Glendale, CA

On Sep 24, 2014, at 5:44 PM, rbethman <rbethman at comcast.net> wrote:

> Looking at the SX-16 manual, there is "one" 1mfd 400V Electrolytic. It is C46.
> 
> No other 1mfd capacitors in the entire parts list.
> 
> It is *possible* that a 1mfd 450V was put in by a previous owner at that location, *or* Hallicrafters simply used a 450V in lieu of the "called for" 400V due to what was *on-hand*.
> 
> Not exactly an "uncommon" practice when a lot of this equipment was being produced.
> 
> National did this in the Select-O-ject series of accessories.  Where only 200 o 250V B+ was applied, they used a 450V electrolytic.
> 
> Bob - N0DGN
> 
> 
> 
> On 9/24/2014 8:04 PM, Dan Cotsirilos wrote:
>> I think he wants to know if it is a electrolytic or axial etc?
>> 
>> 
>> 
>> 
>> Dan K9DTC
>> 
>> 
>> -----Original Message----- From: Don Sanders
>> Sent: Wednesday, September 24, 2014 7:01 PM
>> To: BILLY
>> Cc: hallicrafters at mailman.qth.net
>> Subject: Re: [Hallicrafters] sx16
>> 
>> Check with "Hayseed hamfest".
>> Tom supplies caps for refurbishing many hamradios.
>> 
>> Dr. Don W4BWS
>> 
>> On Wed, Sep 24, 2014 at 3:01 PM, BILLY <bjcannon at comcast.net> wrote:
>> 
>>> here goes: i have a sx16, been stored a long time, have cleaned, looked,
>>> did some testing with multi-meter etc...now the problem: have found a 1mfd
>>> 450 volt cap. has been removed, cannot find one locally, tried to order on
>>> from an electronics company, they wanted more info than i could give,
>>> someone point me in the right direction? can't go any further.
>>> 73
>>> bj
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> 
> *-- Bob - N0DGN Sarge/Chief Old cantankerous goat! Non PC and General Nuisance! *
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