Yeah - AM and Longwave modes use the internal antenna.
Now this has got me wanting to make a "Navtex antenna" for 518Khz!
I don't usually think of myself as savvy enough to make one of those kinds of antennas, but for me, sometimes necessity is the fuel that gets me going and able to get things done.
Is this a passive loop, or do you have a liitle fet preamp circuit or something? I'm looking into loops for lower freq reception due to the horrendous s9+ computer, powerline and ADSL noise pollution round here, anywhere below 5 mhz.
Oooow!! Please send me the link to instructions on the LOOP antenna build!! I just paid $345 for a "quantum qx v2.0 plus+" loop antenna with accessories...but not arrived yet. Yours looks like a VERY good build :)
Just to clarify the prev post. A 500pf will not always (in my experience) cover the complete MW band. So usually use a twin ganged cap with 350 & 450 gangs I think and joined the 2 gangs together. These aerials are easy to make. I usually apply varnish to fix the wire to the wooden frame.
I've made and sold loads of these and they're great fun. The standard design I use is to make a 20 inch square of wood 2" by 1" and wind 10 turns of enamelled copper wire (usually taken from a TV scanning coil) around it, finally connecting the ends to a 600 - 800 pf tuning cap to complete the loop. Ive made various other sizes to a max of 4 ft square and pulled in lots of stations.
Variable capacitor of 365uf across the coil :-)
patchcords 4 months ago
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iamIegion 8 months ago
It almost act's the same way as a front end except it's not physically connected to the circuit
renekenshin6573 1 year ago
Try ferrite cores. Unless you just enjoy building large things out of wood pieces.
genesisfan3 1 year ago
How many turns your loop antenna has? And how many centimeters/milimeters is 2 feet?
BoshkoIgich 2 years ago
@BoshkoIgich 16 turns - 2 feet = 61 cm
yogi540 2 years ago
@yogi540 Plans please! Great antenna
KC8YOQ 1 year ago
excellent demonstration. Thanks!
Lynn, NG9D
NG9D 2 years ago
Nice, it's útvarp Føroyar :P
the transmitter is located at Akraberg
(61°23'46.12"N 6°41'34.15"W)
It's a 200kW transmitter running at 50% usually but cranked up to 100% when the news is on so that ships and boats around the islands hear it.
Dreamlgider 2 years ago
could I use a clock radio variable capacitor
sz42781 3 years ago
Oh.. Its not even connected? O.o
Strekmann 3 years ago
Yeah - AM and Longwave modes use the internal antenna.
Now this has got me wanting to make a "Navtex antenna" for 518Khz!
I don't usually think of myself as savvy enough to make one of those kinds of antennas, but for me, sometimes necessity is the fuel that gets me going and able to get things done.
sammyreed 3 years ago
Is this a passive loop, or do you have a liitle fet preamp circuit or something? I'm looking into loops for lower freq reception due to the horrendous s9+ computer, powerline and ADSL noise pollution round here, anywhere below 5 mhz.
G0IFI 3 years ago
Not bad. I'm going to build my first copper tubing loop antenna. This weekend. Let's see what happens!
kc7fys 3 years ago
Wow! GREAT antenna! Very well explained and demonstrated. WELL DONE! :D
~Cindy! :)
..
CindyBradyTooh 3 years ago 2
Found your info on first video (build) what sony receiver is that (SW-77)?? I am using a SW-55 for SWL.
XRayCam 3 years ago
Oooow!! Please send me the link to instructions on the LOOP antenna build!! I just paid $345 for a "quantum qx v2.0 plus+" loop antenna with accessories...but not arrived yet. Yours looks like a VERY good build :)
XRayCam 3 years ago
Thanks for the demo! This is sure an interesting antenna. Thank you for putting this up!
northwestusa 4 years ago 2
Just to clarify the prev post. A 500pf will not always (in my experience) cover the complete MW band. So usually use a twin ganged cap with 350 & 450 gangs I think and joined the 2 gangs together. These aerials are easy to make. I usually apply varnish to fix the wire to the wooden frame.
MARTINDAVIES756 4 years ago
I've made and sold loads of these and they're great fun. The standard design I use is to make a 20 inch square of wood 2" by 1" and wind 10 turns of enamelled copper wire (usually taken from a TV scanning coil) around it, finally connecting the ends to a 600 - 800 pf tuning cap to complete the loop. Ive made various other sizes to a max of 4 ft square and pulled in lots of stations.
MARTINDAVIES756 4 years ago
Very mice - I use a similar antenna for SWL.
Belfast, right? Me too :D
iseemedia 4 years ago
Wish I understood how to make one.
boyprodegy 4 years ago
that's incredible what a signal
Scotscan 4 years ago 2
Good loop antenna there. I would like to learn more about this project. Thanks for showing.
gccengineering1996 4 years ago 2
I printed off the specs for this awhile back but never got around to it. I think I will make this a friday night project! Cheers
signaljunkie 4 years ago 2