Philco 66 - Sweet Music at Last!!
Posts: 190
Threads: 8
Joined: Oct 2005
City: Lexington, SC
On the Philco 66 service info it mentions changes for Run 9, July 10th using a 70 ohm resistor in series with the oscillator coil. It fixes a problem at the end of the shortwave band.
Oscillator frequency typically runs above the incoming RF antenna signal. Therefore with the radio dial at 1000 KHz, the oscillator freq. should be 1000 + 460 giving 1460 KHz. Use another radio held near to listen for a beat signal between 1400 and 1500 to verify the oscillator is running at or near the correct frequency.
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RE: Philco 66 -Nothing - by rghines1 - 05-04-2012, 08:37 PM
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The speaker table error?
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G 10-1/2" 65, 76, 87, 95
Push-Pull 45's
2766
0.7
550
3200
H 10-1/2" 77, 96
Push-Pull...morzh — 09:26 PM |
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I have a Stromberg, one of the early ones, seems early 30s.
This is what I call a back breaker. None of the early Philc...morzh — 08:28 PM |
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A backbreaker.....PaulPaul Philco322 — 08:12 PM |
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>>What a behemoth!
A Juggernaut.morzh — 07:47 PM |
Philco 70 antenna lead
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I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM |
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:e_biggrin: What a behemoth! I hope the final result is as much a quality sounding example! Keep us posted on your pro...GarySP — 07:32 PM |
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I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM |
Philco 70 antenna lead
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Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM |
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I'm also a member of MARC. Did you attend the Vintage Electronics Expo in Waterford, MI last month? That's where I got...GarySP — 07:22 PM |
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Dan
Double conversion is using two IF converters instead of one. This improves the image response.
morzh — 07:15 PM |
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