My homemade Palstar clone and Quantum clone loopstick tunes up to 2MHz. If my location was only quiet enough to hear anything <sigh>! Maybe some day...!

I'm trying to recall the best Litz types for the MW Type 61 rod and the LW type 33 rod. I remember Gary had updated his findings at one point. So, can someone remind me of the most current best recomm

While on the subject of ferrite loopstick antennas, I have built a tuned ferrite loopstick antenna much like the ones that can be bought commercially. Electrically, VERY much like the commercially ava

PS I know I'll need the dimensions and Mu of the ferrite stick for any realistic calculations.

Geez, I drift away from engaging my RF brain for a few months and I forget everything. Cold months ahead plus the acquisition of an SDRPlay are getting the juices going again. Ok I've supercharged my

Hi, A little off topic but has anyone used a component tuner from a "high end" company like NAD, Denon etc. for at home DXing? Their open design would make them easy to modify. Their would probably be

You're likely to find many answers as to why ultralights. I think that generally this group is all about the "art" and challenge of trying to squeeze the most out of an unusually good portable (for th

Look in the files section for articles on "supercharging" your PL-380. The Tecsun line of radios use a special DSP "radio on a chip" to varying degrees of success. The 380 has proven to be Tecsun's be

You're going to need something that gives you the ability to put a band stop filter in between your antenna and your radio. Clifton Labs sells them or you can certainly build your own. That still may

To expand on that nice description: Field strength and receiver sensitivity and receiver meter readings are different animals. Receiver sensitivity is just one way to rate how a receiver will "hear" a

Whatis.com says it better then me! "The standard unit of electric field (E-field) strength is the volt per meter (V/m). An E field of 1 V/m is represented by a potential difference of 1 V existing bet

Maybe Tecsun knows what they're doing after all ;-) Remember that Tecsun is really just creating a platform to let the Silicon Labs si4734 digital signal processing chip perform its job. The Tecsun ra

This problem is specific to the PL880. I cant speak for any other models. There are pictures and/or posts that Gary posted when he dissected both versions of the radio to try to get to the bottom of t

The picture shows nothing more then the noise being generated within the radio. The measurement was taken in a shield room that is free from all outside rf signals. It has nothing to do with how the r

Thanks for the "back story" Michael. Sounds like your iron spends plenty of time in the "on" position"! It appears that the front end of the SI series chips has varicaps built in which means simply ad

"Why hasn't anyone done even a breadboard for a simple inductively tuned AM radio? Not a bit of digital hash, no PLL issues, etc." There's something about the words "simple","breadboard", "ultralight"

I posted some pictures under loopstick antenna project. All parts I had on hand or are from eBay. The variable capacitor is really nice and currently available from a UK seller. It has gear reduction

I've built a stand alone LF and bcb loopstick antenna (basically a Palstar LA30 clone) using type 33 and 61 ferrite rods with left over Litz wire as described in the supercharging project. So far so g

Thanks for the video. It really helps illustrate why the cliff is such a good place for DX! Can't wait to get there someday!

It is a type 33 rod I wound for LF. My mistake!