Hi Jerry, All metal frame caps have the frame connections as part of the frame. Just because your cap has a plastic cover, you can use your DMM or the resistance part of your LCR meter to determine wh

Any such ferrite coupler only needs a small amount of inductance to work well at MW. For example, the ferrite coupler supplied with the CCrane Twin Coil antenna, about 2" long probably for the interna

Congrats! Steve

Hi Ray, And my own FSL tests from quite awhile back also showed significantly lower sensitivity compared to the solid ferrite sleeve. Steve (snipped)

It's been quite awhile since LF conditions were even halfway decent, but tonight I added two more beacons. Static was high but not too high to pick out idents between the crashes. 216 GRF WA Fort Lewi

Unusually good northwestern conditions noted on the "big radio and outside antenna" this morning on the usual morning Pacific checks so went upstairs and listened on the ULR with FSL and was rewarded

A&K indices low and static manageable, so off to check if any ULR NDBs could be found. House noise appears to be the lowest I've ever had it, especially on the bottom end--not sure why that is but hap

Static started out high then decreased for a nice change. One new one, and 391 DDP also at good level from the same general area. Steve NE Oregon PL-380, 10.25" new LF FSL (1950 points) 526 ZLS BAH St

Some decent morning Pacific conditions this morning, first noted on the "big radio and outside antennas", so went upstairs and listened on the ULR and FSL. LWBC Far East Russia Radio Rossii heard on b

Added 180 to the list of Far East Russia LWBC heard on the ULR. 153 and 279 also heard same time but 180 best by far. Steve NE Oregon PL-380, cake dummy 20" Litz tuned loop (non-ferrite) 180 Far East

Congratulations, Richard! Wow, what a journey! Steve NE Oregon

I'm currently in Tucson for a couple of weeks, having arrived Saturday, flying from Boise with a stop in Las Vegas. I took my Tecsun PL-380 with "Gary modified" 7.5" ferrite rod (and LF coil) and fram

Hi Raph, I haven't done any FSL construction lately, but I would say as a broad generality that you need an LC meter to start with. You can't just say such and such a coil diameter will need such and

The Chinese manufacturer of the Litz was still learning how to make Litz and various colors of silk insulation were used. Chinese Litz was compared to reference Litz from US-manufacturer Kerrigan-Lewi

Thanks for doing all that work to make those tests! I've listened to the audio clips several times each now, with headphones, and even with my tired old ears that have significant high frequency loss,

Hi Ray, My experiments several years ago indicated that the low end of MW was enhanced with the wire right on the rod, and high end enhanced with some spacing from the rod--for the basic single-rod lo

Hi Ray, It's good to read that you're having fun experimenting with air loops, ferrite rods and your Kchibo radios. But what I'm wondering is how you came up with the very high impedance ratio for you

Hi Ray, At least the way I understand loops, you can't change the impedance ratio unless you change the turns ratio. But certainly by reducing the pickup loop coupling you're improving the loop Q; you

Ray can give details about his loop--inductance, min/max of his variable cap used to tune it, etc. I used a program by Reg Edwards to "reverse engineer" Ray's loop given the details Ray has already gi

Thanks! Steve