[Lowfer] WA schedule for tonight

[Bill Ashlock]

Status of WA at 10:30 EST:

Sending Std modulation only on test loop. The signal is, hopefully, at 
185.300 but I disturbed a portion of the slant circuit, which could have 
thrown off the freq. I think another factor is that the very slow RC time 
constant in this circuit takes about an hour to stabilize.

The loop current is close to 4A so we should be getting out there (at SOME 
frequency <G>). My math shows the current x area product to be about the 
same as the #12 gauge 50/50 loop that TMO is operating (assuming Mike is 
running 0.83A IE: 1W on his loop)

I'm currently having a problem sequencing to the two loops. When I first 
turned on the test loop the current peaked at below 1/3 of the expected 
current. The problem was the big loop was acting as a parasidic resonant 
circuit, even though the output stage was turned off and the distance 
between loops is >20 ft. Will need to work on this later; so at the present 
time only the test loop will be running with the big loop disconnected from 
it's final.

Let me know what ya see.

Bill

>From: "Bill Ashlock" <ashlockw@hotmail.com>
>Reply-To: lowfer@mailman.qth.net
>To: lowfer@mailman.qth.net
>Subject: [Lowfer] WA schedule for tonight
>Date: Thu, 30 Jan 2003 17:03:08 -0500
>
>I finally have arrived (~ one month late) at the point where I will be 
>transmitting on the 80ft diam 3/4" pipe loop. During the early evening 
>hours I will be testing and tuning this loop to determine if everything is 
>working correctly. Later in the evening, if all is OK, I will be sending my 
>typical WAs with slant marker on 185.300 but with an alternating big 
>loop/small loop sequence (one WA and slant per loop). Both loops are 
>pointing in the E/W direction and both will have 1W inputs, so the signal 
>should represent the difference in loop current x area.
>
>Tomorrow I plan to reduce the Vcc to the large loop's final so that both 
>loops will have the same current x area product and this should make both 
>signals appear equal at all distances.
>
>I will greatly appreciate ARGO signal strength measurements as well as 
>plain old signal strength measurements from distances under 50 miles.
>
>Bill
>
>
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