Jim, Please send me the tuning meter pdf file. Thanks, Bill A PS: I hope the circuit takes into account the FACT that the phase relationship between current and voltage in a resistor can vary. (HA HA
Alan, all: I suspect that you need to isolate the loop feed with a small transformer. It is possible that the feed from the loop is acting as a wire aerial and is conducting TV RFI and noises from th
Mal, Hi Bill. I cannot wait much longer so pse hurry up with those big signals. My loop is in your direction, so between the loop and the vertical system I think I should hear you, hopefully the wind
Mal, So your advice is to: Never believe anything you hear or see!!!!!!!!! Is that how we should deal with statements relative to your own loop antenna measurements? BTW: Be prepared to apply your st
Andre, Did you mean to say "Part 5" licenses below? Bill A Are there experimental licenses of the UK type that extends the individual amateur's privileges on a case by case basis, or are they just fo
Despite assurance from ARRL that an amateur would have to be within a few 100 yards of the line for there to be any problem, at which distance the power line QRM would be horrendous, FCC have gone al
CFH continues to operate on 137.0 kHz. They sure have my attention in Andover, MA! I'll take some readings on their signal now that my SVM is set up for the 137k area of the band. Any way of contacti
John A, With the proposed 100 watt transmitter output limit here in the U.S., we can be a little more conservative with audio amplifiers used as transmitter PA's. I have been playing with a nominal "
Bob, I have put a microphone on my SLM and have been receiving bats. Be wary if they start using QRSS Especially if one of them inserts a slant marker to improve identification in a noisy environment
Walter, I thought I was was the king of the arrow-shooting crowd but that crossbow beats me by almost 4X! Is this for a giant loop antenna? (missed the original post) I used to make my arrows as well
But what is the capacity of this old hat? Would two be better ? G3GVB Don't know, but I've heard that two heads are better than one. The one exception however is finding agreement on top hat capacity
Laurence, Are you saying that you have R = P/Isq = 70/(2)sq = 18 ohms for your total system resistance? If so, that would be very good. Thought you measured 50 ohms last week. Bill A WD2XDW Anchorage
Hi Laurence, deep deep in the thick forest lives a LF tranmitter with lossy vegetation The site here is surrounded by cotton woods, birches and firs. This evening I put out few 1/4Y radials, Yep some
David, resonant antenna at these frequencies. Also I remember a QEX article a while ago that detailed underground dipoles used by USAF for emergency communication with aircraft. The efficiencies were
David, I hate to break the news to you but theory and loads of experimentation have shown that the horizontal portion of a wave this long is short-circuited by the ground surrounding the transmitting
Laurence, Great story! Naturally this goes on the list of top 100 reasons why the loop is superior to the vertical. <GGGGGGGGGG> Bill A XDW was on very much reduced power for a few hours today. A pai
Hi Dex, I built the xmitter about 1965 after reading a an article in an electronics magazine about the Part 15 rules. A schematic was included using what I believe was a 6AQ5 for the power amp. So I'
