Hi Guy, <<< Around the same time I also experimented with the nulling ability of ferrite rod antennas using a 3/4" X 18" commercial Stormwise ferrite rod. I'm sure Gary must have tried various

Hi Bill, <<< Thanks for posting the link to your article. In all that I've read about the FSL, I haven't seen any "directivity" comparisons given between the various implementations. Your

Thanks Gary- FARMERIK

Hi Nick, With regard to nulling ability, I wonder if the optimum length-vs-diameter ratio for FSLs is different than for standard (solid, non-hollow) ferrite rod antennas. In the early days of the

Gary, Thanks for posting the link to your article. In all that I've read about the FSL, I haven't seen any "directivity" comparisons given between the various implementations. Your

Hi Farmerik, <<< Tell me more about this 'Sensitivity Rating' please. >>> The FSL "sensitivity rating" formula was determined after detailed A/B experimentation with 8 different FSL test

Tell me more about this 'Sensitivity Rating' please. For example, my toroid stack uses 3 inch coils over a 13.5 inch long stack. What would that rate? It has very sharp peaks when pointed exactly at

Thanks to the timely assistance of Scott Davis and my Kiwi buddy Tony King we are now "swimming" in the Funnoodle inner core material for the 3" FSL PL-380 project. If you are having trouble tracking

<<< Your observation of superior nulling ability with the stubby FSL antenna is very interesting Gary. One of the most intriguing aspects of the old SRF-59 in my recollection was that in spite of

Your observation of superior nulling ability with the stubby FSL antenna is very interesting Gary. One of the most intriguing aspects of the old SRF-59 in my recollection was that in spite of its

Michael, There are several articles that I have posted in the files section of URLthat cover my experiments and builds. Everett N4CY In a message dated 1/17/2016 7:00:52 A.M. Central Standard

Hi Gary, If you will remember I did many experiments using the 64 X 12 X 4 mm ferrite bars and built several stellar performing FSLs by butting the bars up to each other. I have used them 2 wide, 3

Hello All, For those who are unable to track down the scarce 100mm x 20mm x 3mm Russian surplus ferrite bars (to make a 3" FSL Tecsun PL-380 model), an alternative design has been created using the

I came to this party late, having seen the video posted on the SWLing.com blog last week. I looked at the large ferrite antenna on ebay but decided to try to build one. The small PL-360 replacement

For ferrite core loop antennas, which is more important for maximum sharp directivity. Ferrite width or coil diameter? - FARMERIK

Thanks Tony, The 15-page construction article apparently didn't end up in its original form with the Box.com upload, so please use the link below to download the entire article. All others on the

Hello All, For those who want to experience breakthrough MW-DXing capability in a portable receiver, the all-new 3" Bar FSL Tecsun PL-380 model has been designed. With the triple advantage of

After being nearly 6 months in Havana, here my report. During the first weeks, I lived in a downhill apartment in Vedado with bad reception conditions. I never got more than 16 FM transmissions and

Thanks, that was just a guess. I recently used 660/46 on my 3 coil Polydorof. -FARMERIK