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Also the tank circuit in vacuum tube finals will allow loading into a
mismatch -- just watch that the plate and grid current values are in limits. -- 73 From El Martillo ------------------ "El Martillo" wrote in message news:UiDhb.67228$Ms2.27006@fed1read03... A TS-520 has vacuum tube output stages -- Vacuum tubes are very forgiving of SWR --- unlike solid states rigs. I operated a TS-830S (tube outputs) with swr's well over 3:1 for years (no tuner) and never had to change the finals. Not desireable but in my case had no choice as I didn't have a tuner and the SWR was high on one end of the band for my junior beam. Caveat -- your tube life may vary !!!!! -- 73 From "Cecil Moore" wrote in message ... Jack Twilley wrote: My question is: what is an acceptable SWR range? I am using a Kenwood TS-520 and an MFJ Versa Tuner II. Your transceiver manual should specify a maximum SWR. For my IC-706, it is 3:1. I consider anything below 2:1 to be perfectly safe. That's about 11% reflected power. Most modern transceivers are equipped with foldback circuitry to protect the finals. -- 73, Cecil, W5DXP |
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