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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For parts or not working 1. 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: TR-7 Manual de uso en espanol. Get our latest news and links in your email.

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Next change out the electrolytic capacitors. Books Support This Site: PS-7 High resolution schematic diagram.

Does the crystal calibrator in the R4B work? Guaranteed 3 day manjal. Format see r4h Format. Protective plastic covers front and back. Crystal frequencies for repeater. Condition see all Condition. Easy to change, just seven screws. For example, the 40 meter range uses an 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.


All other connections can be made with regular audio cables.

Filter is fully tested and works great. Item Location see all. MN-7 Manual de usuario en espanol.


I try and not start adjusting anything inside the radio until everything else fails. Amounts shown in italicised text are for items listed in currency other than Euros and are approximate conversions to Euros based upon Bloomberg’s conversion rates. The amplitude will change when the preselector is adjusted.

So to be clear are you not seeing anything at pins 1 and 7 of V8? Do some voltage checks.

R.L.DRAKE R-4 B Instruction Manual

AL4 Loop antenna Manual. Greg, Use your scope to see if there is output from the pre-mixer at the cathode of mixer tube V2, the dake frequency will depend upon the band in use and should be observed to change as you tune the PTO. PS-7 Manual with schematic. Please provide a valid price range. See each listing for international postage options and costs. This is the manuals page for Drake.

Drake R-4C Receiver instruction manual. Make sure that the auxiliary crystal selector is in the norm position.

Show only see all. Drake R4B manual – related links We thought you might also be interested in these additional web sites, selected from the same category: This will confirm or not that the VFO is working. Tune the VFO to one end of the range and adjust the timebase so that the widest point of the sine wave covers exactly 2 major divisions on your scope screen and then tune to the other end and compare width. Skip to main content. I am not sure where to go from here.


For more recent exchange rates, please use the Universal Currency Converter. The injection cable in the Drake Twins should be a low capacitance cable. If you have some stuff that not is listed here you can donate this by contact mods. I have measured the voltage on all the tubes and pin 1 v3 seemed to be the one that was out the most, darke is supposed to be I can pick up a signal from the r4b on my shortwave receiver at around 4.

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