Antenna

 


Home Up Antenna Rotating Antenna Philco 20 Model 45 90 37-61 Philco 39-30 40-150 40-150 #2 40-150 #3 40-180 40-190 41-221 41-290 42-350 46-421 48-1256 Service Bulletins

 

 

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I received a link to Steven's site some time ago when I had a Philco 40-180 chassis to restore and no antennae.  The information on his site seen below was very helpful in construction a replacement.  I frequently use the antenna for bench repair and alignment.  Very little alignment "tweaking" is needed once the chassis have been reinstalled with their original antennae.   (Rotation Antenna page.)

The Short wave antenna (a simple loop of about 24 inches or less of wire suspended by stiff cardboard) is not shown here.  Images of it will be added later.  Message me if you need a picture sooner.  This loop is stapled to the top of the cabinet above the chassis.

This internal short wave antenna will fit into a 40-150, -180 or -190.   Use a stiff solid wire for the antenna loop.  Hot melt glue will help assembly.  You can use nut washer and bolt combination for the two terminals or washers and pop rivets. Use stranded wire for the leads with spade crimp or solder ends. 

INT ANT.JPG (23370 bytes) Image of internal SW antenna stapled on the top of the cabinet.   IM000063.JPG (62255 bytes) SW ant.jpg (76038 bytes)  Dimensions 

 

Please see site address http://www.geocities.com/reevesradios/150a.html  for original document.   Send Steven at  http://www.geocities.com/reevesradios/  a thank you note.

Break out the tape and hot melt glue guns and have at it!

 

Reeves Radios Home Page

1940 Philco 40-150

Click pictures for larger image.



Outside Coil: 2 wires from T3 to "B" then one goes 17 turns left to "c"and just stops no connection. The other goes Right 17 turns to "C" and just stops no connection


The inside winding is 13 turns around the "D" Dowells.
Start at T1 Wind around "D5" up to "D4" Wind starts from outside part of inside coil (see inset picture).
Make a tap at 7 turns at "D2"
next tap at 9 turns at "D4"
and at 13 turns at "D3"

Terminal Strip A
TI CONNECTS TO WHITE/BLACK TRACE (TO RADIO), PADDER CONDENSER, OUTSIDE OF INSIDE COIL
T2 CONNECTS TO TAP AT "D2" (7TH TURN), WHITE/ORANGE TRACE (TO RADIO)
T3 CONNECTS TO "D3" (13TH FINAL TURN INSIDE),PADDER CAP GOING T1 , 2 WIRE FOR OUTSIDE COIL GOING TO "B", WHITE WIRE (TO RADIO)
T4 CONNECTS TO "E" EXTERNAL ANTENNA AND ALSO A 250pf AND 10k RESISTOR IN PARALLEL TO T5
T5 CONNECTS TO WHITE/RED TRACE (TO RADIO) TAP "D4" (9TH TURN) AND CAP AND RESISTOR AS IN T4 DESCRIPTION.

Some of the above information is:  2003 Steven W Reeves  http://www.geocities.com/reevesradios/150a.html 

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