Thanks- I do have an LC meter to test with. I guess my problem is I don't have accurate use of my hands or sharp vision, and my Radio repair guy, who is an expert on antique tube equipment has never

It is s trial error process when using multi coils and with coils in parallel you will see a lower inductance than a single coil for the same frequency coverage. For coils in series the inductance

One of the inductance meters I use is this this low cost, multi-function tester for only $21.97 with Amazon Prime shipping. At this price, anyone experimenting with antennas for their Ultralight

Rik; For approx. $100, you can buy the same meter I use, AADE IIB for measuring inductance. John W0HII

As I try to read articles here, it looks like combining coils is not like combining speakers. It looks like the uH does not change the same way, and I see no obvious way to predict results at all. Is

So it sounds like the 4 coil Polydorf would have all four coils about the target uH, giving lots of Litz to pick up signals, but I would have to choose one uH if I stayed with a series/parallel 4 coil

Hello Farmerik, The PL-360 MW plug-in loopsticks use 58 turns of 40/44 Litz wire centered on an Amidon 7.5" Type 61 ferrite rod, for a coil inductance of 350 uH. The related article is posted at

If you are using the Polydoroff configuration, then YES. Now that you areincreasing the length of the rod, you should be able to use a 4coil Polydoroff configuration. If you are wanting to make it a

Remember the ferrite antennas you made for my PL-360 which plugged in the top? What value of uH did the PL-360 like best tuning the AM BCB? - FARMERIK

Would you think multiple coils in series are significantly better than one winding, or just a little better? -FARMERIK

You do not need to glue, or space the toroids, I have tried it both ways. Just get a 1" dia dowel rod and cut it just slightly shorter than the total length of the 18 stacked toroids. Then use wood,

I couldn't help myself and ordered 8 more toroids. My plan is to have 3 coils wound which will have a total uH in series for AM. I think those windings will cover 2 toroids, but 3 would be fine too.

I did not experiment with a pick up coil on the one using that 2" dia toroids. However, if you will look back at some on my past articles I have info on using a coupling transformer using binocular

Another question about your [Eversharp's] new anteena wound on Toroids, have you experimented with a pick up coil, and if so what worked best to connect directly to a radio. I guess the usual way is

RE: << Is anyone here using any type of loop antenna on the lower frequencies of SW? -FARMERIK >> Well, I have not specifically sat a long time-and-DX tuned the "tropical band" -- but likely tuned

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 using a Wellbrook ALA1530 right now, listening to 5070 kHz and it does great even for the AM BCB. I can even listen to the FM BCB pretty well although they say the range is 50 kHz - 30 MHz. If I

Is anyone here using any type of loop antenna on the lower frequencies of SW? -FARMERIK

A 2 coil Polydorff might be a good option. It will take a little more than just one coil. Everett N4CY

Sounds like it should make a very interesting antenna for me. I should have enough 660/46 Litz left over from the special low uH antenna for the Fisher AM 80 which I am having made on a 12 inch X 1/2