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Vintage TR machine question

September 27, 2018 08:41PM
I know so little about this. I wasn't even sure if it would be applicable to the previous TR thread.

So I was given an old Ray Jefferson detector about a year ago. I dug it out this evening and toyed around with it a little. I opened it and it was cool to see an old open fin type variable capacitor on the "tuning" knob. The "sensitivity" knob looks to be a standard closed type pot. It does power up, and seems to detect, but in a weird way. Would this thing have been designed to null out on good targets? I swing a can of compressed air over the coil and it sounds off. I swing a 9v battery over the coil and it sounds off. But, I swing a clad dime and it nulls, or the threshold goes silent. Exactly opposite of what I expected?? I've put it up for the evening, but plan to fiddle with it some more tomorrow. I need to spray some cleaner in the sensitivity pot as it is making all sorts of racket.

Any of you tenured detectorists got a recommended start up procedure for this thing? I'm assuming I would use the tuning knob for ground balance, then use the sensitivity knob for threshold as it gets louder as you turn it clockwise.

Thanks in advance

Upstate South Carolina
Current Detectors-
Teknetics T2 SE with stock 11" and 5" DD coils
MXT 300 with stock 12 inch coil, 9" spider, 950, 5.3 and SEF 8X6 coils
Tesoro Compadre
Attachments:
open | download - 20180927_215254.jpg (258 KB)
open | download - Jefferson.jpg (90.8 KB)
Subject Author Views Posted

Vintage TR machine question Attachments

GA1dad 144 September 27, 2018 08:41PM

Re: Ray Jefferson Model 200 Treasurer Attachments

GA1dad 109 September 29, 2018 07:50PM

GA1dad, clean the 'pots' and try it again.

Monte 92 September 30, 2018 07:13AM

Re: Ray Jefferson Model 200 Treasurer

WM6 78 September 30, 2018 06:19AM

Old-time 'conventional' TR's are interesting. eye rolling smiley

Monte 91 September 28, 2018 07:02AM

Re: Old-time 'conventional' TR's are interesting. eye rolling smiley

GA1dad 75 September 28, 2018 09:00AM

Re: Old-time 'conventional' TR's are interesting. eye rolling smiley

WM6 72 September 29, 2018 02:43PM

Re: Old-time 'conventional' TR's are interesting. eye rolling smiley

WM6 89 September 28, 2018 08:33AM



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