[Lowfer] WM

[Bill Ashlock]

Thanks for the readout, Jay. Looks like she's working up to expectations! Now if we can only get some skywave results. That 10 ohms of total Rac (the calculated value which equates to .316A of antenna current) must be fairly close to actual. Requires that 1.27 multiplication factor, then dividing by 2.828, in converting the P-P value of the square wave output of the Xmtr to the actual sine wave RMS voltage at Fo. (I'm assuming no loss in the core of the output transformer or the output transistors).

The lower Y's  distance off the ground varies from about 10ft at the support tree trunks to 5ft at the base of the antenna (no center support at the present time). There's some need for experimentation, here, to determine the best elevation, consistent with the max height of the local moose population :)

Thanks for the reminder about the need to return with the current meter. Will give you a reading if possible later today.

Bill

> From: jrusgrove at comcast.net
> To: lowfer at mailman.qth.net
> Date: Wed, 21 Dec 2011 07:44:10 -0500
> Subject: [Lowfer] WM
> 
> Bill
> 
> >30 dB s/n in 28 mHz bandwidth this morning. See top capture at
> 
> http://www.w1vd.com/interestinggrab.html .
> 
> Signal also audible ... bfo set for 800 Hz ... you can hear the sig come up about 3 sec. in. Short 
> aaudio clip at
> 
> http://www.w1vd.com/WM122111.mp3 . Don't recall hearing Ellsworth during past operations. Distance 
> 158 miles.
> 
> How high above ground is the lower Y? Will be very interested to hear what you measure for antenna 
> current.
> 
> Jay W1VD  WD2XNS  WE2XGR/2 
> 
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