[AF] Strange gear used in broadcast stations

It's Dave enginr
Thu May 10 16:57:20 CDT 2007


I'll bet that A-54 would be a screamer with a modern Motorola
Transistorized [current loop] base mike attached.

It would sound like a condenser mike driving like a real good carbon mic.


----- Original Message -----
From: "David Joseph" <w7amx at hotmail.com>
To: <af at radiolists.net>
Cc: "David Joseph" <w7amx at hotmail.com>
Sent: Thursday, May 10, 2007 5:50 PM
Subject: [AF] Strange gear used in broadcast stations


I have a Elmac A-54 (carbon mic in) and a A-54H
(high impedance mic in).  I ran across an article
on a tropical band station in South America that
used one for its one and only transmitter.  Sat
on a tall pedestal and had what looked like an 8
inch muffin fan attached to the rear panel.  Had
to make an opening for that.  No...I don't
operate mine with the band switch in the 11 meter position.  {8 O

Just found four JAN 807s (one used in the final)
still in their boxes.  With the scant amount of
air time I have nowadays, I'm good for quite a while.

Dave Joseph, CBRE CBNT
W7AMX

------Original Message------
From: "Gary Peterson" <kzerocx at rapidcity.net>

>It was a small 19 inch rack mount 250 watter that was
>used as a standby at WLEU-1450 Erie, PA.

This sounds like a transmitter that was originally marketed to hams that
ended up in a BC station.  Temco made amateur transmitters, back in the
40s/early 50s IIRC, that were advertised in QST.

I have seen some pretty strange things used for AM broadcast auxiliary
transmitters.  One homebuilt, one modified E.F. Johnson Viking I, one
modified Multi-Elmac AF-67, for RPU on 1606 kc, and one Hallicrafters
BC-610.  The homebrew job was in an open wood rack.  An OSHA inspector
would
have had a stroke.

Gary, K?CX



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