Freed - Eisemann

[stusnyder]

Up on the bench is a unknown model freed-eisemann tabletop, one I picked up from Kutztown a few years ago. Seems like this was somebody's home at one time. Mr. Mouse was very busy destroying the RF coils.
Anyway, whats left from what I can tell is there was 3 coils per tube. Closest circuit I can find is a mission - bell model 407 or 411 ( riders vol 6 page 11-2 )
Tube lineup 80, 41, 75, 6d6, and 6f7.
Anybody know where I can get coils that will work?

[old_coot88]

Yee-ikes! Hope you're observing proper hantavirus precautions.

[stusnyder]

Originally Posted by old_coot88

Yee-ikes! Hope you're observing proper hantavirus precautions.

My wife researched that in the past. The virus is only alive for a few days to a week in urine and droppings. I have had this stored for 2 yrs in a mouse free environment. So it was this condition when I got it.
Although it probably will be scrapped if I can not find coils that will work.
Anyone have miller numbers 43-A, 43-RF, 5261-A, 5261-RF, or merit BC412 and 413? Any of these should work.

[stusnyder]

Turns out I found a meissner cross on these coils, and playthings of past listing shows he has them. I just shot him a email as to availability. If he has them, the chassis is heading to the cabinet blaster.

[stusnyder]

Well here it is after a strip down and a trip to the blasting cabinet. All recapped, chewed up wires replaced. Got the coils from playthings of past. Can't fire it up just yet, found a tube was in it that does not belong or subs. It takes a 6F7 and somebody has a 6A7 in it's place. Did not have one on hand, so I had to order one.

[maxhifi]

Looks fantastic nice job!

I was really not expecting this one to live again!

[stusnyder]

It's alive, but having problems with the tuner. All I get is 1 station, and the tuner is acting like a volume control. I may have to experiment with different coils.

[old_coot88]

Is the one station spread across a portion of the dial? If so, the local oscillator (LO) is not running.

[stusnyder]

spread across the ENTIRE dial....

[dieseljeep]

Originally Posted by stusnyder

Well here it is after a strip down and a trip to the blasting cabinet. All recapped, chewed up wires replaced. Got the coils from playthings of past. Can't fire it up just yet, found a tube was in it that does not belong or subs. It takes a 6F7 and somebody has a 6A7 in it's place. Did not have one on hand, so I had to order one.

Did you try it with the 6A7. Maybe someone rewired the socket to use it.
The 6A7 is a pentagrid converter, where the 6F7 is a triode-penthode type tube. IIRC, the cathode is common to both sections of the 6F7.

[stusnyder]

Originally Posted by dieseljeep

Did you try it with the 6A7. Maybe someone rewired the socket to use it.
The 6A7 is a pentagrid converter, where the 6F7 is a triode-penthode type tube. IIRC, the cathode is common to both sections of the 6F7.

Yea can't pick up anything with the 6F7 in it. Currently got the 6A7 in.

[Reece]

Check with another operating radio to see if the oscillator is working. Don't know the IF frequency of this set but if it's around 455 kc, set the good radio to around 1450 and tune the Freed Eisemann back and forth around 1000. Should hear a squeal in the good radio.

If no squeal, check the oscillator coil wiring: try reversing just one set of leads, EITHER the primary OR the secondary, of this coil. They have to be in the proper relationship to each other for oscillation to occur.

[stusnyder]

Since the original coil got chewed in half by mice, the only thing moyer had was a miller universal coil, which I thought I had hooked up right, but might not be. I'll try it with the other radio.

[Reece]

If you want, bring it along tomorrow.

[stusnyder]

Tried the radio trick, it does squeal. This was after I realized I did not install the goat shields...duh...Still does nothing with the 6F7 in it, so at some point it must have been reworked to use the 6A7.