I believe that MFJ Enterprises sells an RX noise bridge. I have used a noise bridge from Palomar Engineers for years, but they apparently no longer sell it. Palomar does sell a Tuner-Tuner" which is essentially a noise bridge without the inductance and impedance adjustments; it is set for 50 ohms. You can read about it at http://www.palomar-engineers.com 73. Mike, K9AZS ----- Original Message ----- From: "T Behler" <[log in to unmask]> To: <[log in to unmask]> Sent: Friday, May 05, 2006 2:53 PM Subject: Re: working with a Predator Screw-driver-type antenna > Mark: > > No, I do not know where you can buy a noise bridge, but I bet others on > this > list will know. > > We'll see. ... Depending on how things go here, I may be in the market > for > one myself. In the mean-time, I'm going to try working with the Remy > Simard > talking SWR meter, and see how far that gets me. > > 73 from Tom Behler: KB8TYJ > > ----- Original Message ----- > From: "Frederick" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Friday, May 05, 2006 1:15 PM > Subject: Re: working with a Predator Screw-driver-type antenna > > >> Hi Tom, >> >> Personally I would think that a "noise bridge" would be your best >> bet. >> That being said I have never owned a noise bridge so it is just a guess. >> A question though do you know where can I buy a noise bridge? >> God bless, >> Mark WZ0K >> God loves you! >> My personal prayer book. >> Add your prayer or pray for others at the following link. >> > http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0 >> >> http://lists.topica.com/lists/funhamradio. >> http://groups.google.com/group/funhamradio-list >> >> http://funhamradio.bloki.com >> ----- Original Message ----- >> From: "T Behler" <[log in to unmask]> >> To: <[log in to unmask]> >> Sent: Friday, May 05, 2006 8:39 AM >> Subject: working with a Predator Screw-driver-type antenna >> >> >> > Hi, everyone. >> > >> > Well, my teaching semester at the University has ended, which means >> > that >> > Summer can't be too far behind. And, with Summer comes another round >> > of >> > experimenting with HF antenna arrangements for the RV travel trailer my >> > XYL >> > and I recently purchased. >> > >> > I have decided (hopefully wisely) to try a screw-driver type antenna >> > called >> > the Predator, to see how that will work for me on HF. I am going to > mount >> > the antenna system on a pipe that has been welded to the spare tire > holder >> > on the back of the trailer. I am doing this simply because my XYL and >> > I >> > have found it difficult to string long wires and dipoles at most camp >> > sites. >> > I also had worked with the Buddipole modular antenna system last year > with >> > rather limited success, due to the fact that that particular antenna >> > system >> > turned out to involve multiple combinations of tap and coil settings, >> > making >> > it rather "user unfriendly" for a blind ham like me. >> > >> > As I get and try this screw-driver type antenna, I am thinking of > several >> > questions. >> > >> > What would be the best strategy for adjusting the antenna system so as > to >> > get the best SWR? I have a talking SWR meter from Remy Simard that > should >> > help. I assume I could put the rig on low power, and simply work the >> > antenna up or down until I get the best possible SWR. Has anyone ever >> > worked with one of these screw-driver-type antennas? If so, does this >> > strategy make sense, or do you have other suggestions? >> > >> > >> > I also have an LDG AT11MP auto-tuner that I use with my portable HF >> > set-up, >> > but I would think that that wouldn't be usable in this case, since, in >> > effect, the screw-driver antenna is already a tuner, and you'd then >> > have >> > two >> > tuners working against each other. >> > >> > Any thoughts or suggestions would be appreciated here. I hope I >> > haven't >> > bitten off more than I can chew, but I guess it's worth a try. >> > >> > Best 73 from Tom Behler: KB8TYJ, Big Rapids, MI >> > >> > >> > >