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replacing missing loop antenna Philco 49-1405
radiorich
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Posts: 1,597
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City: Omak State, Province, Country: WA
#1

05-10-2009, 02:27 AM
Hello everyone,
Ya I know it's me again !
Well I have another quick question dealing with this Philco model no. 49-1405 am/phono combo.
It's missing the internal loop antenna.
well in the schematic diagram all it shows is the resistance only 3.6 ohms .
There is a 5pf mica cap in parallel with it Far as a replacement I going to make new one up .
Any idea what lenght of wire to use there is a little of it left .
So I can figure the gauge of bare copper wire.
Sincerely Rich
P.S. heres the schematic again if needed
http://www.nostalgiaair.org/PagesByModel...013646.pdf
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Ron Ramirez
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Posts: 13,776
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Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

05-12-2009, 05:34 PM
Hi Rich

The 5 pF cap is in series with the external antenna lead.

Otherwise I'm afraid I can't help you much with this issue...
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Ron Ramirez
Ferdinand IN
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radiorich
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Posts: 1,597
Threads: 100
Joined: May 2008
City: Omak State, Province, Country: WA
#3

05-14-2009, 12:03 PM
Hello Ron,
Ya I noticed that after posting it .
Far as that antenna I'll see what I can come up with one guys on ARF gave me a idea .
HoW to figure what I need far as a antenna far as turns of wire and how to tune it using another radio set at the same 600 khz freg .
Sincerely Rich
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