[Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use

2009-10-06 Thread Daniel Ransom
Check the Kreco line of antennas. They have a 6-m coaxial dipole that should perform as well as or slightly better into the valleys than the j-pole antenna. You have two options the CO-41A or the CO-41H, depending upon your bank account and the weather severity of your site. The shunt feed

[Repeater-Builder] 18-MHz Channel Elements?

2009-09-16 Thread Daniel Ransom
I am thinking about using a Mitrek direct-FM channel element in my Midland 13-509 transmitter. Have you had experience with making these channel elements work at 18 MHz? Regards, Dan at K7MM, VU3MMW

[Repeater-Builder] Needed: Low-Band Bandpass Cavity

2009-07-04 Thread Daniel Ransom
Do you have a low-band bandpass cavity I can use on my new six-meter repeater (53.750 MHz, -1.7 MHz split)? I have the double-notch DB-4032A duplexer all tuned up and ready to go, but my site owner requires at least one bandpass cavity on the TX output. Regards, Dan at K7MM, VU3MMW

[Repeater-Builder] Re: Six-Meter Isolator Circulator

2009-06-10 Thread Daniel Ransom
I contacted Sinclair about the I1 circulator available in ZL-land. Here is their response: These circulators are built to order and have a very narrow tuning range. I checked with our technicians and we are not sure how you came to have one at 47 MHz, but they don't believe that we will be