[ARC5] A.C. Modified BC-348

[Robert Downs]

I have to comment on the “Unfortunately”, though.  Remember that the original design with no ventilation provided for assumed that the set would spend most of its operating hours above 17,000 feet where the expected ambient temperature is shall we say “chilly”?  Sitting on the ground in San Antonio though, the ambient temperature is more likely to be described as “toasty”.  So ventilation has to be considered as “required”.  

 

Robert Downs

 

From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] 
Sent: Saturday, August 28, 2021 17:24
To: Hubert Miller
arc5 at mailman.qth.net; milsurplus at mailman.qth.net
Subject: Re: [ARC5] A.C. Modified BC-348

 

On Fri, Aug 27, 2021 at 11:29 PM Hubert Miller <kargo_cult at msn.com> wrote:

Here's a 348 i found in my stash. The rectifier tube is a 25Z5, which means a drop -in supply with minimum mods. Unfortunately tho, the cabinet top has been aerated. The PS has no markings really except for this on the tube area shield:

"TESTED GOOD 11/10/ 45 ROB". Too early to have hit the surplus stores, so this must be a gov't mod.

-Hue Miller

 

 

 

 

Sent from my Verizon, Samsung Galaxy smartphone

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