Hi there, Wasn't there a way with "bazooka" antenna to get a wider bandwidth of any antenna? I will remember that you could use a parallel resonator to extend the bandwidth on any antenna. An other w
There were some articles in QST 20 or 30 years ago about using lumped element networks to broadband a dipole. You can get a mediocre match from 3.5 to 4 MHz using these. I think it stays under 2:1, b
You might (might be the operative word here) be able to come up with a multisection matching network that has reasonably low loss to cover the 3.5 to 4 (think of having two masts of the required leng
Thanks to all that responded. I've decided to use an old Rohn 25 base that already has 60 radials down as an experiment. I'm going to erect an insulated 45 foot #25 tower with a standard top that acc
Terry, You can use a pully system to get more travel out of the 4 foot "throw" of the actuator. Secure one end of a cable on the pipe, put a pulley on the actuator, run the cable over the pulley, and
Well, how about approach, emtioned even in ON4UN's book - make vertical resonant in CW part of band, short it with series capacitor to be resonant in SSB portion of the band. Relay, switching in shor
I have an inverted vee with this setup. Works great. Rick N6RK _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contest
What kind of caps and values did you use? Thanks. 73, Glenn/KD0Q -- Original Message -- From: "Richard (Rick) Karlquist" <richard@karlquist.com> To: <miroslav.sibilja@amis.net> Cc: <HansLG@aol.com>;
I used a 250 pF transmitting mica (WWII surplus). It gives about 250 kHz shift. That gave me good enough SWR to cover the whole band. Rick N6RK _______________________________________________ _______