[Lowfer] WG2XRS 72.401...

[jrusgrove at comcast.net]

Bob

Was wondering what your antenna R is without the ground system. Do you have an rf ammeter in the 
antenna lead? The better ground system is only going to make the arcing situation worse.

Some quick calculations assuming antennas like you and I have ... at 72.4 kHz:

1200 watts / total antenna R=40 ohms (poor ground system) ... 16.4 kV at top of loading coil

1200 watts / total antenna R=10 ohms (excellent ground system) ... 32.8 kV at top of loading coil - 
yikes!

Much over 20 kV requires good insulation, corona rings etc - damp wx can be a show stopper. Good 
idea to have a fire extinguisher handy for 73 kHz 'high power' operations!

Jay



----- Original Message ----- 
From: "Bob Raide" <rjraide at hotmail.com>
To: "Bob Raide" <lowfer at mailman.qth.net>
Sent: Sunday, September 08, 2013 12:04 PM
Subject: Re: [Lowfer] WG2XRS 72.401...


> Tnx Jay for great report.  Have couple minor issues-high voltage at vert input flashing 
> occasionally  but otherwise no problem at 1200 W. Backed off to 1 KW and fine so far!
> Got some good reports over night out to 800 miles or so and JD listening this morning.  Got to get 
> ground system out before all tunes up properly.
>
>> From: jrusgrove at comcast.net
>> To: lowfer at mailman.qth.net
>> Date: Sun, 8 Sep 2013 11:11:23 -0400
>> Subject: Re: [Lowfer] WG2XRS 72.401...
>>
>> Bob
>>
>> Signal off back of antenna http://www.w1vd.com/grabber.html . Quite audible off the front of the
>> antenna. Distance 288 miles. No interference and low static levels at the moment - could hear a 
>> pin
>> drop on the frequency.
>>
>> Jay W1VD
>> WD2XNS
>> WE2XGR/2
>> WG2XSR/2
>>
>> ----- Original Message ----- 
>> From: "Bob Raide" <rjraide at hotmail.com>
>> To: "Bob Raide" <lowfer at mailman.qth.net>
>> Sent: Sunday, September 08, 2013 11:02 AM
>> Subject: [Lowfer] WG2XRS 72.401...
>>
>>
>> > Will be changing over to QRSS60 from 45 and on for few hours daytime-Bob
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