Subj : Re: RF Burn
To   : Roy Witt
From : Ed Vance
Date : Tue Jun 24 2014 09:53 pm

06-23-14 12:04 Roy Witt wrote to Ed Vance about RF Burn

 RW> @MSGID: <53A95581.620.amtradio@capcity2.synchro.net>
 RW> Greetings Ed!
Howdy! Roy,
 RW> Right. I have a Bird Wattmeter using a 25watt HF slug, my
 RW> HR2510 shows no RF output while keying the mic in SSB mode. AM
 RW> or CW OTH, will show 10 watts into a dummy load (i.e. 1:1 SWR).

I had to see what a HR2510 was, I thought it was a Radio made by
Regency as my HR-2 is, but no, it's made by Unidin(sp?).
-snip-
 RW> Or a field strength meter. to show any RF that may be there.
 RW> Key the mic and then go outside and sweep the area around your
 RW> 20M vee. Then key your 520 in CW mode and see what you get.
 RW> Better yet, try touching your inverted Vee at the place where
 RW> RF current is supposed to be highest. You should get a kick out
 RW> of that.

And RF Current is Max at the Center Insulator of my 20M Inverted Vee
that is just below my Gable Roof, Right?

If that is correct I'd have to Key the Mike and Climb a Ladder to test
that out, I Don't Think So, I'd have a Unmodulated SSB Signal on 20M
for several minutes if I could do that test.

I can't do it anyway since the Co-Ax feed line isn't running from the
Attic to the Basement where I could do it.
And before You Ask why not bring the 520 upstairs to do the test, Nope!
-snip-
 RW> I just did a test of what I meant and my tests show this to be
 RW> true.

Thanks for doing the test.
That's suprising to me, of course your test was using a 25W MAX XCVR
and I only have the Kenwood 520 to try here.

.... Hard work never killed anybody, but why take a chance??
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