[MRCA] BC-348 Help

[DSP3]

The J, N, and Q used a differenttype of capacitor for general use.  The 
other models used the plastic/paper (postage stamp) types for the .05 
and .01.etc.  They are not as robust as the later types in the J, N, and 
Q.  Also the J, N, and Q used a double trimmer in the modules and they 
don't fall apart.  I just went through a donor R model and found when I 
gently tried to adjust the capacitors, each and every one slipped back 
and shorted out.  If you ever see the adjustable part not level with the 
collar, its cracked, for sure.   The J, N, and Q use a large capacitor 
for filtering whereas the others use a bank of metal cased .5ufd wired 
as .5, 1, or 1.5uf.  I have generally found that these hold up well. If 
one is going to modify the unit for an a.c. supply, with good filtering, 
several of these metal caps are wholly unnecessary and can be removed. 
Finally, the J, N, and Q mount most components where they're used, 
rather than on adjacent terminal boards..

Jeep K3HVG

On 2/10/2019 12:39 PM, JEFF CICCONE wrote:
>
> Jeep and folks  I have both a 348J and a Q. My Dad had the J squired 
> away in his  uninsulated attic for many years totally original and 
> unhacked sans DM28.  After he passed away in 2012 my Mom was cleaning 
> out the attic and saved it for me. I found a dynamotor and after much 
> eyestrain from internet schematics, wired it up and the reception and 
> audio was very good after many years storage - what were the caps that 
> were used in the J model?  Jeff
>
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