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From: larson@sri-unix.ARPA (Alan Larson)
Newsgroups: sci.electronics,rec.aviation
Subject: Re: headphone jacks for microphone input to aviation radios
Message-ID: <9713@sri-unix.ARPA>
Date: Sat, 14-Nov-87 04:03:58 EST
Article-I.D.: sri-unix.9713
Posted: Sat Nov 14 04:03:58 1987
Date-Received: Sun, 15-Nov-87 17:30:37 EST
References: <633@hubcap.UUCP> <864@plx.UUCP> <2047@vice.TEK.COM>
Reply-To: larson@sri-unix.UUCP (Alan Larson)
Organization: SRI, Menlo Park, CA.
Lines: 25
Xref: mnetor sci.electronics:1732 rec.aviation:5146

In article <2047@vice.TEK.COM> georgep@vice.TEK.COM (George Pell) writes:
+In article <864@plx.UUCP>, dick@plx.UUCP (Dick Flanagan) writes:
+> In article <633@hubcap.UUCP> warnock@hubcap.UUCP (Todd Warnock) writes:
+> >Does anyone know where I can find a supplier for the smaller jacks
+> >used as microphone jacks in avionics ?  The headphone jacks are 1/4",
+> >but I'm not sure what the mic jacks are or where to find them -

+> Look for stores that sell to the electronics hobby crowd, such as
+> Amateur (ham) or CB radio supplies.  They are a stock item that should
+> be very easy to find.

+The mike jack is not the garden variety phone jack everyone is used to
+and is not typically found in electronic supply stores.  They were
+originally intended for military use, and can sometimes be found in 
+in surplus stores.  A ready source is your local avionics shop, San Val, 
+or Sportys.

Only partly right.  It is a PJ-068 (or some such), and can be had from
most any well equipped amateur radio supplier.  It is used on some of
the older Collins equipment for mike input.  Radio Shack will probably
not have it.  By the way, beware the brass ones and some of the cheaper
chrome plated ones, the surface corrodes (or wears) and the connection
can become poor (or noisy).  (Why is the tower telling me that radio is
unreadable?)

	Alan, wa6azp