Maker Pro
Maker Pro

Regency air band scanner schematic

I have an old Regency air band scanner and don't have the book or manual. I really want a schematic and any repair manual for it. I have the FM scanners info already, but this is different. It is AM and on a different band. Crystal frequencies are multiplied different also. It is the Regency model TMR8A. Any one assist me in this matter?
 
Sir wb8yxi_Ski . . . . .
Obviously THIS reference above, is not being your unit, with it using a quadrature FM detector.
Give me some crystals values that you have installed in the unit, so that I can compare against
only 1 other Regency TMR8 family series of schematics, that I have access to.

Also, let's see if it is using differently from Xtal frequency + 10.7 = receive frequency . . . . for its
computation mode, such as the above unit does..
OR
if its using Xtal frequency . . . . . tripled-10.7 = receive frequency.
ASIDE . . . .
Boy . . . .where's a person to get those xtals now-a-days, in multi decades past, I used to use International xtals . . .Texas xtals . . .or JAN xtals, but I fear that they are all past now . . . .time for a synthesizer.



upload_2018-5-12_19-9-25.png




73's de Edd
 
Last edited:
Thanks Kelly and Edd for your replies. The scanner does work but one of the crystals is 10kc low. No problem, I have 6 others that work fine. I tried to figure out the frequency multiplication using the FM units formula and no way! I think it uses 10.7 for IF but not sure. I did download the manual for the TMR8 but couldn't get the A (Air band) model. I think the FM manual recommends either Regency or Sheppard for a source for crystals. I used to get mine from International Crystal(ICM) and they were always great for accuracy, but a little steep in price. I trusted their products though. Yes Edd, that is the radio I have!
Thanks again guys for the replies.
Ski-WB8YXI es 73
 
Another comment, The good crystals I have are 118.3, 121.7, 121.9, 122.8, 122.9, 123.0. The 121.2 is the one that is off 10kc.
73,
Ski
 
Top