[600MRG] XSV only RX until further notice....

[jrusgrove at comcast.net]

>But what should one expect at the antenna end of a base loading coil?

Antenna current times reactance of the loading coil.

Jay W1VD  WD2XNS  WE2XGR/2  WG2XRS/2

 


----- Original Message ----- 
From: "Edward R Cole" <kl7uw at acsalaska.net>
To: "John Langridge" <jlangridge at sbcglobal.net>; <600mrg at w7ekb.com>
Sent: Tuesday, March 11, 2014 2:34 AM
Subject: Re: [600MRG] XSV only RX until further notice....


> This begs a question as I thought RF voltage was peak at the end of 
> an antenna and RF current peak at the feed.  But what should one 
> expect at the antenna end of a base loading coil?  I am using one 
> inch diameter by ten inch long pvc tubing for my base insulator and 
> also hang the coil with the same tubing from a wooden enclosure.  The 
> top end insulators are 12-inch ceramic-glass.
> 
> The antenna went up last night with the eme array so I could try 
> receiving signals.  We are in a storm with winds up to 30mph so 
> static noise might be high.
> 
> 73, Ed - KL7UW
> 
> At 06:42 PM 3/10/2014, John Langridge wrote:
>>should I say congrats on joining the club by making fire with your antenna?
>>
>>base insulator is a common breakdown point.  you will get it worked 
>>out.  Its a sickening feeling, though, when you see it and its 
>>happening to you.  Once again the IRF 540 shows its resilience.
>>
>>73! John XIQ
>>
>>
>>
>>
>>________________________________
>>  From: Neil Klagge <w0yse.7 at gmail.com>
>>To: 600mrg at w7ekb.com
>>Sent: Monday, March 10, 2014 9:37 PM
>>Subject: [600MRG] XSV only RX until further notice....
>>
>>
>>When I went out to re-tune the base coil tonight in the light rain, I
>>discovered an arcing (sizzling sound). Then I saw the arc and a tiny bit of
>>flame between the base insulator and the mounting plate. I had to shut down
>>the TX so I am only receiving decodes for the rest of the night.  I will
>>re-evaluate the base insulator situation in the daylight after the rain
>>quits, which may be more than 24 hours....
>>
>>73, Neil
>>
>>*"I use the original form of social networking: Amateur Radio." *
>>*(my ham radio sites are at 'w0yse.webs.com <http://w0yse.webs.com>'  and
>>'wg2xsv.webs.com <http://wg2xsv.webs.com>' )*
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> 
> 73, Ed - KL7UW
> http://www.kl7uw.com
>     "Kits made by KL7UW"
> Dubus Mag business:
>     dubususa at gmail.com
> 
> 
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