All these modules inside the cab are labeled thus: Final RF amplifier comprised of two PL-254W tubes: P-8233B
Exciter: P-8630-AM2 this threw me because I thought for a moment it was "AM" not "FM". Not true, it is FM. Receiver: P08607-AH incidentally, one of two crystals on receiver is 16.54167 MHz. There is another one, but it only says something like "3355" very nondiscript, in a 'pinch' holder, that is to say retained on the chassis by a pinch device. Power supply/ transformer chassis with 2ea. 5R4-GY tubes (regulators?) Xmit/Receive rotary switch panel: P-8449B Squelch/ Line Input Control---does this control the audio INTO the exciter? Microphone gain that is?: P-8066-N HV Power supply: P-8238-C-2 I cannot find a receiver model number that looks anything like this. Maybe there are other places to look. I really don't know about these model numbers that I have supplied here as to what they mean. I assume "P" prefix has some global meaning relating to the entire unit. The complete model number is: FSTR520BR(FW)1ASP2 The chassis number underneath the model number is: 1413 The mfr. date is Oct. 1953. This is found on the rear, at the top, outside the cabinet. What is the "RED" book, what is the "yellow" book? Can you clue me in. I'm willing to go to the library of Congress if necessary. All Your help(s) is VERY appreciated, Rod. On Sun, 18 Feb 2007 23:09:46 -0500, George Sintchak <[EMAIL PROTECTED]> wrote: > As I mentioned in my earlier posting, The last IF is probably 1.7 MHz > if the receiver model is a FMRU13V(A). A rcvr without the "(A)" in > the model number was a less selective receiver that (I believe) used > a higher freq last IF. That may be what you have with the 2.9 MHz > last IF for low band receiver. NONE of these receivers had any type > of Permakay filter or a 455 kHz last IF! What is the complete model > number stamped on the blue front panel of the receiver under the > Motorola name? You really need one of those "Yellow" schematic books > I mentioned before. You are really testing my memory on all of > this.... > > George > > --- In [email protected], "Rod Shaner" <[EMAIL PROTECTED]> > wrote: >> >> What is the IF for this 1953 Motorola 520BR rig? 2.9MHz?? >> >> R. >> >> On Sat, 17 Feb 2007 20:09:50 -0500, Eric Lemmon <[EMAIL PROTECTED]> wrote: >> >> > www.com-spec.com/narrow.htm >> >> >> >> -- >> Using Opera's revolutionary e-mail client: > http://www.opera.com/mail/ >> > > -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
