On May 10, 4:54*pm, N9NEO wrote:
On May 10, 2:44*pm, Telamon





wrote:
In article
,

*RHF wrote:

SNIP

Telamon - A bit Technical -but- A Good Detailed Answer ) ~ RHF
-ps- I like AM/MW Loop Antennas made with Litz Wire.

Yeah, you post so much garbage here I wish you could do the same.

--
Telamon
Ventura, California

My Loop $0.02

I have a homebrew broadcast band loop that is 33" on each side. *It is
9 turns spaced about 1/2" apart. *I ring it with a 900uuf variable. *I
had built it with *#16 solid wire but changed it to 165 strand of I
think it was #42 or #46 litz.

I could not tell the difference between the litz and the solid magnet
wire - they worked about the same. *I can pick out signals that are
totally buried in the noise with either wire. I have a seperate
winding that is about 10" in diameter that I use to drive the hi
impedance input of my receiver. *The only benifit of the litz wire
that I can tell you is it looks pretty. *My loop was built with retro
look and the litz looks nice. *I park it in the living room, so the
wife was glad when I got rid of the gnarly kinked up magnet wire. *I
think I paid about 40 bucks to make my loop look nicer. *I will concur
with Mr Telamon- Save your money. *And to answer your question - you
should do just as well with homebrew as with store bought with same
dimensions. *And size does matter. *If some guy tells you it dont, you
can be sure he is playing with a small loop.

My friend just built the 20db preamp for one of his 160m & 75m loops
and told me it does a nice job. *It is in Jan/Feb 2001 QEX. *By Zack
Lau, W1VT.

Thanks for the thread. *Let us know of your adventurers with your
loop.

regards,
Bob
N9NEO- Hide quoted text -

- Show quoted text -

Bob N9NEO,

Yes the Litz Wire made of 165 Strands of #42 to
#46 Wire is good stuff and pricy too.

FO&A,

Somewhere at some time I came across a webpage
that featured an AM/MW Loop Antenna which used
a short piece of 300 Ohm TV type Twin Lead as the
Coupling Coil between the Loop and the Radio.

One of the Wires in the Twin Lead was connected
across the ends or the Larger Loop and the Tuning
Capacitor.

The 'other' of the Wires in the Twin Lead was then
connected to another piece of Twin Lead; that was
used as the Balance HI-Z feed-in-line.

IIRC - The reason this was done was that the Receiver
was already using the SO-238 Jack for the External
Shortwave Antenna and this Twin Lead Coupling
Loop Arrangement allowed the use of the Receiver's
HI-Z Terminals with out having to use an External
Antenna Switch with the two Antennas. Just use
the Receiver's built-in Antenna Switch to change
Antennas and go from Shortwave Listening (SWL)
to AM/MW Radio Program DXing (BCL).

Anyone remember a AM/MW Loop Antenna webpage
using Twin Lead as a Coupling ? - I have looked and
looked but can't find it again. Maybe it has been
removed ? - i want to know ~ RHF