I have toroids on all the cables….and even started pulling cables out of the shack to see if it made a difference….im beginning to wonder if the amp has a fault….
Sent from my iPad > On Oct 29, 2021, at 10:57 AM, FZ Bruce <k...@twc.com> wrote: > > It is likely RF traveling into the amp via multiple wires, cables. Recommend > you put RFI cores on the coax between the radio and amp, and on the antenna > coax near the amp. > > ( also possible getting on power supply connections) > > 73 > Bruce-K1FZ > > ----------------------------------------- > > From: "WW3S" > To: "topband@contesting.com" > Cc: > Sent: Friday October 29 2021 10:44:39AM > Subject: Topband: amp tripping on 160 > > After two great nights of being able to receive, I am beyond frustrated, > as I cannot transmit....something happened recently, and I cannot figure > it out... I suspect its RFI, but not sure why.....as soon as I transmit > on my Inverted L, my SPE 1.3KFA amp trips, saying SWRT exceeds > limits.....yet the SWR displayed is 1.46 to 1.....new to me, but not > new to this season is my tower which holds my Inverted L.....it was 50' > of Rohn 25, with a Hazer, its now a Alumnatower 48', with a > wonderpole.......but.....that setup did work, as I worked S9OK and > 3DA0RU with it....I added a second receiving loop in the front yard, so > thought that was it, but I took those cables out from the shack and > still have a problem....yesterday morning, I found the short piece of > coax had a nick in it, from the mower I guess, so replaced it, and > shortened my L a bit to bring the SWR a bit further up the band.....I > tested yesterday morning and it was great, low , mid and high power, > even 1300 watts of RTTY, no failure, I tried several times during the > day and all was great until darkness, and as soon as I keyed the amp, > failure.....I pulled out what little I have left of my hair trying to > figure this out......the wonderpole is grounded and I "assume" the tower > is grounded thru that......should I separately ground the tower? Doing > so will complicate tilting it over, plus I only have copper grounding > attachments, I thought I read where I shouldn't use dissimilar > metals.....but willing to try anything to get my 160 TX ability > back...thoughts? > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector