Clarence, This should explain it: http://en.wikipedia.org/wiki/Rotary_encoder The major consumer portable manufacturers have been slow to adopt DSP. Sony, which once led the way with synchronous

The sun's at us again. Some of us complained about the duration of the last solar minimum. Now the sun's telling us, I'm ba-a-a-a-ck! After one peaceful day we had a G3-level storm yesterday, and a G2

Hi Everyone, I have a Grundig G8 and I really like the volume control. I don't know what it's called (that's my question actually). It's a rotary wheel that doesn't stop, IMHO an outstanding feature,

Hi, Steve, Yes, I used a bobbin. Various physical limitations due to age, make it take a little longer. The worst part was making sure the #24, which is fairly stiff, was snug all the way 'round. It

Hi Jim, I wind a lot of toroids and use a homemade bobbin to windanything that has more than about 20 turns. The larger the core the larger andlonger the bobbin--for that big 240 core something like a

--- In ultralightdx@..., "sdwillingham" wrote: > If you wish to Google for more information, try searching for direction-finding antennas. I've been living in that world the last several weeks. At

--- In ultralightdx@..., "sdwillingham" wrote: > > Thanks for the kitsandparts link! I've been struggling to find a good source for toroids and wire at reasonable prices. MW and LW take a lot more

Thanks for the info! I hope to avoid starting a collection but the 790 looks interesting. All of those old sets had 455-kHz IFs and so-so image rejection. I think the next one is going to be

Hi Guys: Well...I'm still squeezing the guts out of what's left of the AM BCB Season. Tonight at Sunset Skip I logged ONE NEW STATION, and a RELOG CALL CHANGE. So...even though it's getting noisier

Thanks for the kitsandparts link! I've been struggling to find a good source for toroids and wire at reasonable prices. -Scott-

In addition to the overall shape of the antenna (length vs diameter), a big factor in creating deep nulls is the symmetry of the antenna, both physically and electrically. In addition the symmetry of

Jim - The 705 is a nice little Zenith, but I think you would really like a 790 Navigator MUCH better. Look here- http://www.seedforsecurity.com/picture20.php?type=radio&imageid=341 You might want to

Hello All, The Tecsun PL-360 is one of the smallest Si4734 DSP-chip Ultralights, witha rather modest stock loopstick. It has fixed 3 kHz DSP selectivity,and fully enabled soft mute-- similar to the

This session was from the Isle of Palms,S.C. near Charleston. 4.5.10-4.6.10 740 CFNZ Canada,Toronto AM 740 & psa for a Toronto event.2015-2018 EDT.fair.E-100 barefoot. 630 Radio Progresso Cuba

Thank you both for your answers!

--- In ultralightdx@..., "ferrite61" wrote: > > 1.) This property involves the "Q" or figure of merit of the antenna. Higher Q does more than improve selectivity. As you've noted, higher Q is

--- In ultralightdx@..., "Pollock,Raphael E" wrote: > > What about the following issues: > 1. Tight center wound coil versus loose winding around a larger length of the ferrite bar? Paul S. covered

1.) This property involves the "Q" or figure of merit of the antenna. For example using solid wire tightly wound on a ferrite rod has low "Q". Adjacent channels will also be received because the

What about the following issues: 1. Tight center wound coil versus loose winding around a larger length of the ferrite bar? 2. Litz versus standard single or multistrand wire for coil winding? 3. If

I'm not an engineer, nor even an Amateur, but I can start the answer in a simple fashion. Essentially, the ratio of the ferrite rod length compared to its diameter determines the nulling quality.