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Philco 610B oscillator wiring
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I've included a picture of the 'actual' schematic I created. I double checked several times and it appears to be accurate. General layout is as appears from the bottom view, with the front of the chassis on the left. Areas of clarification needed are around the oscillator with the wire lines in question highligted with red. I've numbered the oscillator bottom solder tabs clockwise starting at 12:00 oclock, shown as 1,2,3,4 & 5. On the top of the oscillator (hidden by the can) are two solder tabs numbered T4 and T5. These two tabs have wires feed to them from the bottom of the chassis wiring into the center of the oscillator and up to the two solder tabs (shown with an 'x' with a circle around the 'x'). I have identifed the ohms of the coil primaries and seconaries but have not shown them. (Note: to measure them you have to measure the ohms of your test leads and subtract them from your readings.) I believe the shortwave coil primary (brought in circuit by band switch position 3) is across T4-B3 @ 0.5 ohm and the secondary is across B4-B5 @  0.1 ohm. For reference, although not in question because it agrees with oem later production schematic,  broadcast and police wave coil primary (brought in circuit by band switch position 1 & 2) is T5-B1 @ 0.4 ohm and the secondary is T5-B2 @ 3.7 ohm. I am looking for someone to confirm the oscillator solder tabs with respect to the ohms noted and to confirm the connections of the tabs into the circuit. Thanks.... Dan


Messages In This Thread
Philco 610B oscillator wiring - by Tubester - 04-01-2025, 06:11 AM
RE: Philco 610B oscillator wiring - by morzh - 04-01-2025, 12:58 PM
RE: Philco 610B oscillator wiring - by MrFixr55 - 04-01-2025, 01:49 PM
RE: Philco 610B oscillator wiring - by Tubester - 04-01-2025, 04:01 PM
RE: Philco 610B oscillator wiring - by David - 04-01-2025, 06:06 PM
RE: Philco 610B oscillator wiring - by Tubester - 04-01-2025, 08:12 PM
RE: Philco 610B oscillator wiring - by Tubester - 04-02-2025, 05:59 PM
RE: Philco 610B oscillator wiring - by Tubester - 04-05-2025, 07:18 PM
RE: Philco 610B oscillator wiring - by RodB - 04-07-2025, 05:56 PM
RE: Philco 610B oscillator wiring - by Tubester - 04-23-2025, 09:54 AM
RE: 610B Oscillator Questions - by Tubester - 04-01-2025, 09:26 AM



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