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THE AM BULLETIN BOARD => Technical Forum => Topic started by: xe1yzy on May 05, 2014, 11:34:46 PM



Title: RME Model identification help
Post by: xe1yzy on May 05, 2014, 11:34:46 PM
Hello to all,

Comes to my hands this nice receiver today, but I can't find the model!, Its a RME, but any tag or info inside the rig.

Thanks in advance


Title: Re: RME Model identification help
Post by: nq5t on May 06, 2014, 12:28:55 AM
It's an RME-99 "Deluxe" -- c. 1941

(Communications Receivers, 4th ed., 1997, Ray Moore)

Grant


Title: Re: RME Model identification help
Post by: WQ9E on May 06, 2014, 07:21:28 AM
As Grant identified it is a RME-99 deluxe.  I have a RME-99 in its typical case along with an early version (note no calibrated band spread dial) of your receiver.



Title: Re: RME Model identification help
Post by: W3RSW on May 06, 2014, 07:51:04 AM
Nice receivers, particularly like the detail on the Deluxe's band spread dial,

What is the long access strip along the bottom of the panel? The deluxe model has it unperforated while the other has it seemingly perforated with hole fillers. Are there coil tuning slugs or caps under it?

Also "BO tone" caught my eye.   ;D. Magnified it on iPad and it sure reads that way.


Title: Re: RME Model identification help
Post by: nq5t on May 06, 2014, 09:57:12 AM

What is the long access strip along the bottom of the panel? The deluxe model has it unperforated while the other has it seemingly perforated with hole fillers. Are there coil tuning slugs or caps under it?


According to Moore, the strip was put there to allow you to add transmitter or other station control functions to the receiver panel.

Grant


Title: Re: RME Model identification help
Post by: WQ9E on May 06, 2014, 10:23:30 AM
Grant is correct, the bottom is basically open in that section.  The chassis is the same as in the smaller size RME-99 cabinet and all of the basic radio is above the "added" portion in the larger cabinet.


Title: Re: RME Model identification help
Post by: W3RSW on May 06, 2014, 10:26:54 AM
Thanks. Neat touch.
One could make up a dupe panel, add all kinds of stuff and save original.
Probably get lost over the years and trades though.


Title: Re: RME Model identification help
Post by: xe1yzy on May 06, 2014, 10:29:45 AM
Thanks a lot Grant, and thanks to all, this is going to be a nice project, Im allready have the manual, I keep you posted on my progress.

73's Pedro


Title: Re: RME Model identification help
Post by: WQ9E on May 06, 2014, 10:52:01 AM
Pedro,

Check to see whether the line bypass capacitors are connected directly to the transformer terminals.  On most RME receivers of this era they are installed there and hidden by a cover, if one fails it will also bake the transformer insulating paper.  I would replace them with modern line rated types AND move them away from the transformer.  Both my RME-99 and the "unknown model in  a case like yours" had the caps installed this way.  I restored a RME-45 for a friend and the transformer in it was blackened because the line bypass caught on fire.

The RME-99 is a nice receiver and I think the last really good RME after the RME-70 and before the RME-4300.  The RME-45 family looks nice but I think they represent a step down in performance from the earlier units.  

I live about 30 miles from the original RME factory site and have acquired quite a few over the years from the RME-9D through the 6900.



Title: Re: RME Model identification help
Post by: xe1yzy on May 06, 2014, 11:43:54 AM
Pedro,

Check to see whether the line bypass capacitors are connected directly to the transformer terminals.  On most RME receivers of this era they are installed there and hidden by a cover, if one fails it will also bake the transformer insulating paper.  I would replace them with modern line rated types AND move them away from the transformer.  Both my RME-99 and the "unknown model in  a case like yours" had the caps installed this way.



Hi Rodger,

Many thanks for the advice, and congratulations on you RME collections, they are very nice radios for shure, Ok, I keep an eye on those bypass capacitors!

Regards!
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands