its about 70 turns of litz 165/46 on a 4" x 1/2" ferrite rod type 61.
check out gil stacys article in "Files, antenna and equipment, ferrite rod antennas, inductively coupled loops" but i would use a large variable capacitor with 1/4" shaft and ceramic insulators, so i could add an insulated shaft, a big knob and if necessary a 6 to 1 vernier drive.
also check out John Bryants 3 sets of photos in the photo section under "hot rodding the srf-39". thats the definitive conversion of a 39, 49 or 59 to a useable ultra lite radio.
if you add this coil/capacitor tuned circuit, build a second one to use as a wave trap. to tame those flame thrower stations. it might even help with iboc hash. thats on my list of "to do" projects.
--- In firstname.lastname@example.org, "Pollock,Raphael E" <rpollock@...> wrote:
> Which Litz and which ferrite bar?
> From: email@example.com <firstname.lastname@example.org>
> To: email@example.com <firstname.lastname@example.org>
> Sent: Sun Feb 14 09:13:05 2010
> Subject: [ultralightdx] Re: Ultralight Radio Awards Program
> AND, all of us that have received awards can send a list to whoever takes on this job, via private email. to reconstruct these lists of awards. also, anyone can find the last award listing from John and Yahoo makes a list of previous emails with the same titles. that should make the job easier.
> keeping track of who achieves awards, on this website, is most important, to encourage others to go after new awards. just like radio mods, it certainly has spurred me on. i'm starting on a srf-59 mod with vernier drive, bigger battery, external audio amp and external ferrite rod w/litz wire.
> 800 stations, 40 states, 8 provinces. it shows whats possible and gives all of us, hope.
> byron wa8lcz
> --- In email@example.com<mailto:ultralightdx%40yahoogroups.com>, "jim_kr1s" <jkearman@> wrote:
> > --- In firstname.lastname@example.org<mailto:ultralightdx%40yahoogroups.com>, D1028Gary@ wrote:
> > > Partly in order to honor John's memory, however, we certainly
> > > do plan to continue the Ultralight Awards program, and welcome your
> > > comments and suggestions as we proceed in this effort.
> > As one of those goaded by John to apply, I appreciate the effort he and
> > Rob put into the program. I would strongly urge you to cut back on the
> > number of certificates, though that's easy for me to say, having hit
> > many of them already. We could discuss the breakdown forever, so I'd
> > leave that up to you and Rob.
> > Unfortunately, John probably didn't transmit records of total
> > certificates at any level either, so you may want to start from scratch,
> > with a smaller list of awards. (You'd have to dig through the posts on
> > Yahoo to find all his reports. Ugh.) No one would fault you for trimming
> > the program.
> > Assuming you start fresh, another thing I would suggest is to
> > periodically upload a file with recipient's names and certificates
> > awarded, to the Files section, for reference and continuity. Thanks for
> > volunteering to take this on!
> > 73,
> > Jim, KR1S
> > http://qrp.kearman.com/ <http://qrp.kearman.com/>