开云体育

I just built a rough 1 meter diameter loop using #18 wire (1mm/0.04" diameter), with wooden dowels as the form crosspieces and a small piece of cardboard separating the ends about 1/2". Hanging the

I built a tuned loop from a 10 ft piece of copper tubing (3.2 ft/ .98 Meter diameter) about three years ago and it measured as 3.1 uH in free space using the excellent AADE Digital LC Meter (Highly

Hello All, New member here...here's the link: http://www.cebik.com/fdim/atl1.html I am sure most of us are familiar with this site. Question #2 asks, "What Shape Should We Make Our HOHPL?" The first

Ken Javor wrote: uH. But if you measure. Construct a two receiv

1.2 uH sounds low to me, I think it will be higher than 3 uH. But if you have a signal source and a receiver it is easy to measure. Construct a two wire line that connects the signal source to the

exnci2000 wrote: Is this one of the sites you found? http://www.qsl.net/in3otd/ind1calc.html I agree that it doesn't agree very closely with the approximate formula at the bottom of page 2 of:

loopcalc.exe gives 4.8uh 73 jim ab3cv

Hi, I would like to know the correct value, in microhenry, of a single turn air core loop 1 meter diameter (conductor 1 mm ).I tried many software but they give me different results. Regards Franco.-

Hello all The AOR LA350 Loop Antenna is still for sale, is any one still interested in buying it. Thanks Andrew.

A FET might be alright, definitely the ticket on short whip with a high impedance .... I'm not sure what the impedances look like on a (relatively) short untuned loop, I tried to measure one with my

Hi Andrew I'm still interested regards Nigel GM8PZR

My email address is Rlane7301@... Ralph

Hi Ralph, You will need to PM me your email address. Fraser

Hi, add me to the list for the Loop antenna schematic. Ralph

Rob, Email me and I'll add you to the list of email recipients for the schematic. Fraser wrote: amplifier. the form resonance output of never it work

Hi, I'd like a copy of the WL500 schematic! It will save me a lot of trouble tracing through the wiring and PC board. Regards, Rob

Hi Franco, The AOR WL500 uses a MAR6 MMIC from Minicircuits as it's RF amplifier. The WL500 is varacap diode tuned and uses "bulk inductance" in the form of two switched fixed inductors to bring the 2

How about a plain old FET to lower the loading? Keith

You need strict 50 ohm input and output impedances for these MMICs to work properly which is kind of hard to do with the first amplifier on a broadband antenna ... On a tuned loop with a small pickup

Oh No...I believe antennas put up in lousy weather last longer. Just my take... ////// Richards ////// =============================================== Bob B. wrote: Now all I need is warmer