DIR Return Create A Forum - Home
       ---------------------------------------------------------
       kycbradio
  HTML https://kycbradio.createaforum.com
       ---------------------------------------------------------
       *****************************************************
   DIR Return to: RCI 2970
       *****************************************************
       #Post#: 74--------------------------------------------------
       RCI 2970 Tuneup Modifications
   DIR By: kycbradio
       Date: October 5, 2018, 1:34 pm
       ---------------------------------------------------------
       RCI 2970 Tuneup Modifications
       Adjust VR14 (AMC) for maximum forward modification.
       Mod limiter Q32 can be removed for more modulation, but it also
       disables VR12 (SSB ALC) and disables variable power for SSB.
       I do not recommend removing Q32; you'll have plenty of
       modulation as is.
       Tune L34, L13, L14, L46 and L10 in AM mode for maximum forward
       swing, using a peak-reading wattmeter.
       Try to balance for even power from top to bottom of frequency
       range.
       NOTE:
       You'll have a LOT of trouble identifying these cans. Sorry,
       Adjust VR13 (AM High Power) for 12 watts dead key with the front
       panel RF power control at maximum.
       Adjust VR15 (AM Low Power) for 2 watts dead key with front panel
       RF power control at minimum.
       From the 12-watt dead key you should see a forward swing of
       30-40 watts. From the 2-watt dead key you should see a forward
       swing of 18-20 watts.
       Adjust VR12 (SSB High Power ALC) for maximum PEP on SSB, then
       back off just a little, with front panel RF power control at
       maximum.
       Adjust VR16 (SSB Low Power ALC) for 5-6 watts PEP on SSB with
       front panel RF power control at minimum.
       You should see 40-50 watts PEP on SSB with front panel RF power
       control at maximum.
       *****************************************************
       Page 1 of 1