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   AMATEUR_RADIO      Ham radio for when Armageddon strikes      2,531 messages   

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   Message 657 of 2,531   
   Ed Vance to Roy Witt   
   Re: RF Burn   
   24 Jun 14 21:53:00   
   
   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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