[MRCA] Mystery radio - SCR-178

[Dennis DuVall]

To see an SCR-178 inaction go to YouTube, search for w7qho and scroll down to “MRCG 2008”  Other interesting videos the site as well.

Dennis DuVall W7QHO
Glendale, CA

********************

> On Oct 16, 2017, at 9:23 PM, Mike Morrow <kk5f at earthlink.net> wrote:
> 
> 
> There never was a BC-186-A (shown in your component list)...just the original BC-186.
> 
> The CH-38 is more than just a chest.  Integral to the CH-38 are the wiring connections between the units.  The cover forms the operating table and J-44 key mount.
> 
> The SCR-179 is identical except that its chests are designed for carry by pack animal.
> 
> The closest thing to being a placement set was the SCR-284.
> 
> Most surviving sets seem to have 1942 order number dates, and would have served only for training...one suspects rarely even there.  IIRC, the SCR-178/179 first appeared in 1936 on 1937 order numbers.
> 
> I bought a complete CH-38 with its inner units for $50 in 1986.  The BC-187-A transmitter is a classic  VT-25 10 MO / VT-55 865 PA.
> 
> Mike / KK5F
> -----Original Message----- 
> From: WW2RDO via MRCA 
> Sent: Oct 16, 2017 10:33 AM 
> To: mrca at mailman.qth.net <mailto:mrca at mailman.qth.net> 
> Subject: Re: [MRCA] Mystery radio - Thank You 
> 
> Hello Everybody,
>        Thank you for the very appreciated help. I was able to find out much about this set once it was identified.  So I did a little digging,  Of course, I share what I get with the group.  Here's what I came up with
>  
> SCR-178
>  
> Components:
>  
> BC-186 -A             Receiver 
> BC-187- A             Transmitter 
> BC-188-A              Modulator
> BX-4                     Battery Box
> GN-37                   Generator ( hand Cranked ) 8 volt and 500 volt
> Ch-38                    chest
> CH-39 -                  chest
> CD-125                 Power cord
> IN-85                    Antenna Base
> MS-49 -MS 56       Antenna Sections
> J-44                      Morse code key
> T-17                      Microphone
> HB-7                     Headphones   ( varied by year of manufacturer ) 
>  
> Batteries ( Receiver)
> BA-2      4 ea      22.5 volt
> BA-23    4 ea      1.5 volt
> BA-27    2 each   Multi-tap  4.5 volt, 3 volt and 1.5 volt   
>  
>  Operating frequencies were 2.4 - 3.7 mHz
>  
> Replaced by the SCR-608, SCR-609 and SCR-628
>  
> Army Motors is putting this picture inside the front cover of their next issue and was looking for some info on the radio.
>  
> Again, many thanks.
>  
> Mark
> WW2RDO
>  
> In a message dated 10/16/2017 8:55:42 A.M. Eastern Daylight Time, ark at ar88.net <mailto:ark at ar88.net> writes:
> SCR-178 See:  http://people.csail.mit.edu/sw/html/NS1W/scr-178.html <http://people.csail.mit.edu/sw/html/NS1W/scr-178.html>
> 
> 73,
> Al
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