[Lowfer] New idea for Lowfer transmitting

[Bill Ashlock]

I'd like to get some opinions on the following:

Background: I just sent a QRSS30 signal that was adjusted to the Part 15 max 
level of 2400uv/m measured at 300m to John Andrew's base 40 miles from here. 
At 185.3k the signal is limited to 13uv/m at 300m, and at my location here 
at work it amounts to 1.4uv/m, approx 6db above the noise level this 
morning. John's last screen copy can be seen at: 
http://webpages.charter.net/w1tag/WA-1.jpg

The implications of this type of broadcasting are as follows:

1. Far field antenna testing is possible for the upcoming 136k band using a 
portable SVM.

2. Local communications, up to, and possibly exceeding 40 miles, is possible 
at any frequency from DC to 490k using digital modes. Sky wave reception is 
possible but should be rare.

3. As the frequency is lowered the antenna efficiency goes down. However, 
like HiFer, the power to the antenna can be increased to meet the 2400/F 
value. The signal falloff with distance will follow the 1/d relationship out 
to greater distances than the present lowfer band, which in this area, could 
be an additional 6db at 40 miles, thus increasing the range much further.

4. Antenna configurations can be much simpler than at present since the 
power can be increased to meet the 2400/F value. (For example: My tree 
antenna can be used as a TX antenna)

Thanks in advance for any comments.

Bill A

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