Paul... Thank you for bringing he PL-390 to our attention. Although the PL-390 does not do SSB reception, I had an opportunity to handle a new one for about an hour, and I must agree with you...the

Hi Dave, I bought the Tecsun PL390. It is very hot on Shortwave-AM-FM. I was impressed with the way it receives. I live here in Chicago land about 5 miles away from WBBM, WSCR, WGN and I am about 2

Hello Gary and fellow ULR enthusiasts! As some of you may remember, I purchased a Tecsun PL-606, to augment my Eton e-100 and to take advantage of the Tecsun's adjustable bandwidth. Since I live in a

Hello Farmerik (and Alex and Michael), Thanks for your messages. It's probably best to remember that the experimentation to "smoke test" the Si4734 DSP chip to see how much RF it can handle isn't

Hello To All A new addition to the Ultralight Radio Logbook last night 1300 kHz - WXRL - Lancaster, New York 4:20 UTC 1/19/16 w/ numerous Classic Country songs by Sonny James, Ronnie Milsap ,

This explanation was the one which first came to mind. A lot of radios struggle with too much or too little signal :-) Michael Original Message ----- From: Alex winston376 Sounds like AGC

Sounds like AGC circuit 'pumping'. Common when too much signal is presented to the circuit beyond what was designed for. Could also be mixer or IF amp overload. Alex

My understanding of RF theory is pretty limited. Do you think the 'fluttering' is from overloading the DSP chip? If so, would a variable resistor used to cut the signal when needed on some frequencies

For those interested, the first signs of some limitation in the PL-380's Si4734 DSP chip's ability to handle powerful RF inputs from a hard-wired FSL have appeared. In a step-by-step approach to

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