INSTRUCTION MANUAL. R. L. DRAKE. MODEL. R.4B. RECEIVER. PASSBAND. MODEL. RECEIVER. PRICE. Instruction Manual. $ GET THE BEST FROM YOUR DRAKE R4B. RECEIVER. Set the trimmer (NB threshold) as described in the R4 manual (turn until the NB attenuates the signal . View and Download R-4 B instruction manual online. R-4 B Receiver pdf manual download.

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Google [Bot] and 4 guests. So to be clear are you not seeing anything at pins 1 and 7 of V8? Share Drake R4B manual Share this link with your friends, publish within popular social networks or send it via email. You should hear each IF frequency in the general coverage receiver. If you don’t have premix output then use your scope to check for fixed frequency output from the HFO and variable frequency output from the PTO into the pre-mixer tube.

I have measured the voltage on all the tubes and pin 1 v3 seemed to be the one that was out the most, it is supposed to be Guaranteed by Mon, Jan 7.

R.L.DRAKE R-4 B Instruction Manual

This is all the manuals for Drake. Note that there is a limit to the number of files you can download. Complete Primo rb receiver tubes kit – all new tubes – start hearing that DX again with a new tube set to spark up your receiver! All Auction Buy It Now. Drake R4B manual – related links We thought you might also be interested in these additional web sites, selected from the same category: I will check the phone jacks, I think they are ok.


Show only see all Show only. Then tune the general coverage receiver to each IF frequency.

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Dec Mon 31, 6: You are right Dick I am not a technician, just learning so I can work on these when I retire, in six weeks yeah!!! Best Match Best Match. If you have a general coverage receiver handy set it up next to the R4B and run a small length of wire from the general coverage receiver’s antenna terminal any lay it beside the R4B.

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Unfollow drake receiver to stop getting updates on your eBay feed. Yes Roger I do have output on those pins, not a pure sine wave about 6 volts on pin 7 and about 6mv on pin 1 greg. Make sure that any jumpers are in place rear apron that might be required if rrake unit isn’t paired with a transmitter.

RV Model Adapter. Manhal can also click here to see all the manufactories that mods. Refine more Format Format. Next tune the general coverage receiver to somewhere in the output frequency range of the VFO in the R4B.

Feb Sun 08, 5: So what amplitude measurements are you getting on other bands on pin 1? Feb Sun 15, 2: The tubes all light and I maanual static on the speaker. Make sure that the auxiliary crystal selector is in the norm position.

C-4 Manual as bitmap files.

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This is the frequency printed on the crystal can not the frequency the R4B is tuned to. Voltage measurements are critical and all electrolytic caps should be replaced, but may I suggest a few things to try first which MAY help isolate r4v problem s. Sign up to our Newsletter Get our latest news and links in your email.

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If possible use a 10X probe if you are not already. Our new search experience requires JavaScript to be enabled. TR-3 to TR7 Modification Webmaster, add a Remote rating Drake R4B manual – related links We thought you might also be interested in these additional web sites, selected from the same category: That is about it.

As I understand you have already confirmed that the 5. Clean up the radio, replace any light bulbs, check if the phono connectors on the back are still making contact with the the male phono plugs.

I’m not sure of the R4B, but those Drakes would run transceive with a companion transmitter. Feb Sun 15, 3: Feb Sun 08, 4: Radio Communication Equipment If working you can use the built in crystal calibrator as a signal generator. Those are pretty solid radios. If it doesn’t then that sounds like a spurious signal picked up from something else.

Make sure you are using enough scope sensitivity. He used it for many years and then it was parted out. Feb Sun 15, 4: Modified Item see all.

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