Topband: FW: Re: amp tripping on 160

[FZ Bruce]

	To: "WW3S" Cc:
 Sent: Friday October 29 2021 11:16:58AM
 Subject: Re: Topband: amp tripping on 160

 The "L" needs grounds to be efficient when near the earth. Try some
radials to the coax shield connection at the "L" antenna end. Signal
should come up, as stray RF comes down. 
 73 Bruce-K1FZ 

	----------------------------------------- From: "WW3S"
 To: "FZ Bruce"
 Cc: topband at contesting.com
 Sent: Friday October 29 2021 11:05:55AM
 Subject: Re: Topband: amp tripping on 160

 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  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 at 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?
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