[MRCA] H-250 Audio Amp Weekend Project

[Gene Smar]

Kinda reminds me of the Acoustic Attenuator a co-worker and I built when we were working at the local electric utility as summer students.  The RJE printer, a model ASR-33 IIRC, was right next to our desks.  When it printed our results, it clattered and clacked for ten minutes at a time.  We found a cardboard box that held fanfold paper (remember that stuff?) and stuffed it with newspaper (remember that stuff?) around the inside edges and inverted it over the printer.  Musta attenuated the acoustics by 20 dB or better.  

 

Nice job, Breck.

 

 

73 de

Gene Smar  AD3F

 

From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On Behalf Of Alex J Rokowetz via MRCA
Sent: Monday, August 03, 2020 4:34 PM
To: Military Radio Collectors Association <mrca at mailman.qth.net>; B. Smith <smithab11 at comcast.net>
Subject: Re: [MRCA] H-250 Audio Amp Weekend Project

 

Where is the gain dial?

 

K2AJR

 

Alexander J Rokowetz

(516) 551-2498

belarok at yahoo.com <mailto:belarok at yahoo.com> 

https://www.linkedin.com/in/alexanderrokowetz/  

 

 

 

On Monday, August 3, 2020, 02:42:07 PM EDT, B. Smith <smithab11 at comcast.net <mailto:smithab11 at comcast.net> > wrote: 

 

 

Was checking out radio accessories and equipment on my M151A1 and ran across my mini amp.
A simple weekend project and really helps that H-250 receive element in a noisy environment. 
Z


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