[Milsurplus] [MRCA] Items for sale

Mon Aug 23 11:20:18 EDT 2010

 I  had for a while, several fixed-tuned shortwave receivers (Spillsbury, Scientific Radio, and others) which I left on but squelched. Trouble was that on lightning, all would open up at once, and secondly, I couldn't tell which one had a signal.

The solution I planned was a Zetron Model 27, which would take audio from up to eight receivers and when one came on, light an indicator to show the channel in use, and it could take audio from several and combine it to one output.  I never got it, since they were rare.

-----Original Message-----
From: mstangelo at comcast.net
To: Michael &lt;wh7hg.hi at gmail.com&gt;
Cc: mrca at mailman.qth.net; milsurplus at mailman.qth.net
Sent: Mon, Aug 23, 2010 11:03 am
Subject: Re: [Milsurplus] [MRCA] Items for sale

Michael, 

I've seen surplus single channel VHF and UHF aeronautical receivers for sale but  
they take up lots of rack space and it sounds like space is at a premium at your  
new pad. 

You could go the solid state route an build receivers for each frequency and fed  
a common audio output. 

Too bad you don't care for scanners, The new ones are cheap these days and one  
can find used ones for pennies. We have electronics recycling in our town. Most  
of trash is television sets and computers but once in a while I find usable  
goodies such as old scanners. If you don't like the scanning function I'd get a  
scanner for each frequency.  

Mike N2MS  

----- Original Message ----- 
From: Michael &lt;wh7hg.hi at gmail.com&gt; 
To: milsurplus at mailman.qth.net, mrca at mailman.qth.net 
Sent: Sun, 22 Aug 2010 23:29:28 -0000 (UTC) 
Subject: Re: [Milsurplus] [MRCA] Items for sale 

-----Original Message----- 
From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On 
Behalf Of Ray Fantini 
&gt; ARC-73 Collins VHF AM 116.00 to 149.95 in 50 kHz steps transceiver. 
Receiver,  
&gt; transmitter, control head, rack, shock mounts and all cables. Also have a 
junk transmitter for  
&gt; parts. Transmitter is not keying, do not know if it's wiring problem or in 
transmitter.  
&gt; Receives and all other functions like frequency changes are ok. 
$175.00 

Much as I would love to have this, I have to pass ... [very loud, long and 
detailed expletive deleted in accordance with list rules]!   

However, I have an amusing problem sort of indirectly related to this.  My 
new digs are at the old Barber's Point NAS, now called Kalaeloa Airport 
(PHJR, for those into identifiers), and I live directly under the western 
approach to HNL (PHNL)/Hickam AFB which means lots of radio traffic is going 
on that I'm missing.  There are at least four VHF frequencies of interest, 
all having UHF counterparts, two of which I should be able to hear both 
sides of the conversations and the other two only the aircraft side.  Since 
I used to fly, I can pretty much surmise the ground side of the exchanges so 
it's not a real big deal.   

The problem comes in two parts which need a common solution.  First, I want 
to be able to monitor all the frequencies but don’t have space for eight 
receivers.  (I could do the VHF side using A.R.C. equipment on hand but that 
goes back to space.)  With that, I detest scanners.  (I'm used to listening 
to multiple receivers simultaneously from an "earlier life" so that's not an 
issue.)   

What I've been thinking about is multiple front ends feeding a couple of IF 
strips, one each for VHF & UHF, which would eventually go to a common audio 
amp then to a speaker or headphones.  Each front end would have its own gain 
control plus the audio amp would have one of its own.   

Somewhere in all that is a fatal flaw but I don't see it.  Anyone? 

Best regards, 

Michael, WH7HG BL01xh 
http://www.nationalmssociety.org/chapters/NTH/index.aspx  
http://wh7hg.blogspot.com/  
http://kludges-other-blog.blogspot.com  
Hiki Nô!  

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