[Hallicrafters] sx16

rbethman rbethman at comcast.net
Thu Sep 25 11:40:39 EDT 2014


I have NO clue why this went out this morning!

It was created last evening.

I *do* stand corrected!

C-46 is in a network leading from CH1 to T5.

T5 is *indeed* the P-P Audio transformer that feeds the pair of 6V6s, 
which in turn feed T6.

Bob - N0DGN

On 9/24/2014 11:19 PM, Dennis DuVall wrote:
> 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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>>
>> This list hosted by: http://www.qsl.net
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>

*-- Bob - N0DGN Sarge/Chief Old cantankerous goat! Non PC and General 
Nuisance! *
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