Hi Bill; Nope the nulls are very sharp, in fact much sharper than my regularly wound FSL's . as far as a distorted pattern I haven't seen that . These loops have a figure -of -eight pattern ,gain is

Hi Mike If I recall correctly the ferrites used for EMI suppression on data cables are designed to be lossy. In otherwords the RF energy travelling along the cable should turn to heat in the

Hi takane2, Your ICF-S14 indeed looks like ultralight size. To me it looks about the size of my Sony ICF S10 MK2. Welcome to the group. Happy DXing! Bill Arizona

How many feet of litz wire did it take to wind this antenna? How many times around the form did you wind? Thank you!

Shoot, I meant ICF-S14 not SRF. Sorry I got the model numbers mixed up with the Sonys.

Hello, I just joined this group. I don't think I have anything that qualifies as ultralight yet. I have a Grundig FR-200, Grundig G4000A(the last of the YB400 models) and a unbranded 70s era Japanese

The 2020 I.R.C.A./Decalcomania Convention will be held at The Four Points by Sheraton 1221 S. Harbor blvd. Anaheim CA 92805 (Just North of Disneyland) Sept. 10,11,12. Phone number for reservations is

People keep upgrading their PC monitors, and a lot of monitor cables are being thrown away. First VGA, and now DVI. Many of them have EMI suppression ferrite cores of various sizes. They come

I am not an expert in ferrite antennas, just have a gut feeling: shouldn't the rods be moved more to the center, so that they are not sticking outside of the coil? Intuitively, the magnetic material

This is another mystery recording from last month's Poipu, Hawaii DXpedition, featuring Australian English on 531 kHz at 1503 UTC during a sunrise session on November 5th. There is apparently a

Dean, Are the nulls sharp on the main loop? Like a loop which is edge-wound? I'm imagining all that ferrite stuck through the loop sideways distorting the pattern. Maybe it doesn't effect it that

It would be interesting to see how you align the two loops and the directions of the received and the offending station/noise. Even just a quick sketch would be very helpful, as I'm not

TP reception was down from that yesterday. 567 JOIK fair at 1322; barely audible at 1342 (LSR 1330). 594 JOAK fair at 1316; poor at 1321; poor at 1328-1340 with unID co-channel QRM; barely audible

The idea of using two separate loops to produce phase cancellation can be applied to either QRM, QRN, and/or unwanted medium wave signals. Two signals of equal amplitude and 180 degrees out of phase

Hi: By drilling a hole in the center of the ring (that's why i used plastic) and if needed a little glue. Dean W.

Dean, The design looks relatively easy to construct, but how do you secure the ferrite rods to the pipe? Jim

Using the smaller loop as a noise antenna completely gets rid of the house noise /hash. This is a Huge advantage for me as I can DX in my home again :P Dean W.

So what's next in the project Dept. ?? Yup you guessed it ! BIGGER :P Made with a ring cut from a 8 1/2 inch water pipe ,and 29 Ferrite 8x80 mm rods then wound with 1200/46 litz ; This loop gives

hi ;

Possibly the best TP DX morning here in many weeks (LSR 1329). Except for occasional fading up and down, JOUB was audible whenever checked. 567 JOIK poor at 0801 and 1043 with moderate 570 kHz