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RME Transmitter: Help needed




 
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September 19, 2019, 09:47:53 PM *
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Author Topic: RME Transmitter: Help needed  (Read 504 times)
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KD2AZI
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« on: September 07, 2019, 08:46:29 AM »

All, I'm on a research quest before restoration.  I've scoured the 'net, catalogs, QSTs, handbooks, adverts, other web forums, radio doc specialists...Zilch.  The Only mention of any RME transmitter was on AMfone, and I've reached out to the poster. 

RME Model RT-175, tube complement are Taylors, and T-55 is the final.  Has plug in tank coils (I have two) and those aluminum knobs are mounted on plug-in cans, a different set for each band, and I'm missing a few.

It came from a local NJ SK estate with a tag reading: "1939 Transmitter."  It was owned by W3IBI, Dr. Ben Bardfeld, and his son (80+) apparently still lives in the area, and I'll mail him a request for info.  Would be neat to hear about his father, if he's interested in talking about it.  Reaching out to collectors on a QSL card hunt.

Any info or pointers are appreciated!

How would a ham have known this product was available back then?  I checked advertisements monthly for a 10yr period in QST and handbooks and came up blank.  Perhaps he owned an RME 69 and saw it in an RME bulletin?
73
jeffrey





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KA0HCP
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« Reply #1 on: September 07, 2019, 03:43:08 PM »

 I don't have anything to add. I think it was pretty well hashed out on The Zed. Good luck in your search.

I think this was either an RME custom job, or is a frankenstein of various parts and not a RME product.
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New callsign KA0HCP, ex-KB4QAA.  Relocated to Kansas in April 2019.
KD2AZI
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« Reply #2 on: September 08, 2019, 12:14:01 PM »

Thanks, just trying to cover all the bases, may be a different crowd here.
I've started to remove the shelves, and it's very well-made  Smiley
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W2PFY
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« Reply #3 on: September 09, 2019, 01:56:49 PM »

Hello Jeffery, Nice going on that old rig! Perhaps some pictures of the back side of the PA and PS would be appreciated by us?  I have a home brew amplifier that uses a pair of T-55 Taylor tubes. I have enough T-55's thanks to a good friend to build a modulator with period correct transformers including the mod transformers and use another set of T-55's to modulate the rig. T-55's seem like fine tubes so you should have a lot of fun with your rig. Perhaps I'll have mine on the air by next summer? Too many project here and not enough time??

I think old buzzard tubes and rigs are a source of great fun! 

73

Terry 
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The secrecy of my job prevents me from knowing what I am doing.
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Patrick J. / KD5OEI
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« Reply #4 on: September 10, 2019, 11:48:32 PM »


It's not in the "transmitters 1930-1980" book.
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« Reply #5 on: September 12, 2019, 04:52:47 PM »


It's not in the "transmitters 1930-1980" book.

Nor in Ryders Perpetual Troubleshooter.
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K1ZJH
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« Reply #6 on: September 13, 2019, 11:50:16 AM »

Looks to be single channel for commercial.  Nice find.
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Steve - K4HX
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« Reply #7 on: September 13, 2019, 10:33:17 PM »

If it's like most old buzzard transmitters, the circuitry will be fairly simple. You should be able to reverse engineer it.
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