PNP germanium transistor OC71 without black paint intended as photo-transistor. There is a work-in-progress track on the Rabbit Fighter: Alternative Slider CD called ∛uick MacKane and the Babe Shadow - there is no doubt now in my mind that this is a raw and perfect example of his Les Paul / HH / Vamp / RM OC71 in action.PNP Germanium Phototransistor Clear Glass SO2 Case Type OCP71 They havent it is the RM effect in conjunction with all the above, and one which I am now able to replicate easily with my set-up. Also if you listen to ∛uick Mackane just before the solo starts you can hear in the background a couple of phrases which sound as tough they have been done with a Wah Wah. The solos on tracks such as Rabbit Fighter and ∛allrooms of Mars clearly demonstrate this. Given this, I now believe Bolan had one which contained an OC71. So if an OC44 is 1500 grade, OC71s fall between 15 grade. My findings and the opinions of others I have counseled would suggest that the ones containing the OC44 germanium transistors deliver a smoother tone, and the OC71s provide more edge and higher harmonics. I have had the pleasure of acquiring three RMs, and they all sound different. I read somewhere recently where the effect of a Rangemaster is like that of fine grade sandpaper, an analogy which I feel is very accurate. Singles are $9 each plus $4.00 shipping CONUS.ġ00 pcs $5 each plus shipping and PP feesġ000 pcs $3 each plus shipping and PP fees I got these in a large military lot of NOS tubes,they have never been picked through. Of course some of those 20% which do not meet these criteria could possibly be used in darlington pairs.Īll are Holland made by Mullard / Philips. We discarded two of the 10 pcs selected based on our strict criteria, and found 80% passed with flying colors. HFE Gains were extremely usable and perfect for both Fuzz Faces and Rangemasters as evidenced in the numbers and tests in audible circuits: Leakage ranged from 50uA - 120uA VERY low leakage. The test results are absolutely excellent, and the sound of these is fantastic as confirmed by Zack Vex of Z-Vex and George Tripps of Way Huge/Dunlop (two of our customers): We did testing of a random sample of 10 pcs using the RG Keen method at 68 degrees. I have approx 9,000 pcs NOS OC71 CV7005 2N280 remaining (both black glass and metal sheath version!).
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