Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
I just found an orphan EMS model Q2033A mobile at my door. No cables or head, just the transceiver and receiver boxes. These were used on the local ambulance and were full duplex, plus repeater function. Is there any use for these on the ham bands? The duplexer looks to be too wide banded for ham use, I remember playing with one of these duplexer's years ago. Looks like I just have Micor spare parts? 73, Joe, K1ike Emergency Medical Systems Duplex / Repeater UHF Mobile Radio manual supplement http://www.repeater-builder.com/micor/pdf/micor-ems-uhf-manual.pdf 16.6 MB PDF file courtesy of K9ROD This is the no-longer-available manual supplement for the full-duplex dual-receiver repeating ambulance radio model Q2033 and Q1853. Note that you need the regular UHF mobile manual 68-81015E70 to go along with it.
Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
Kreco has been around for a LONG time. I'd guess at least back to the 60's, maybe even the 50's. Colinear antennas often test good when they are really bad. The internal workings can be broken right at the base, but because of a matching section, still shows OK. I've seen it happen on several different colinear designs. One of the reasons I use folded dipoles for most everything important. Chuck WB2EDV - Original Message - From: NORM KNAPP nkn...@twowayradio.net To: Repeater-Builder@yahoogroups.com Sent: Wednesday, October 07, 2009 11:41 PM Subject: Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use Thanks... I have never heard of Kreco antennas. We put a DB-201 up this evening and the repeater is working just great! The diamond is gonna have to come down for an autopsy... I don't understand why the sitemaster was showing I had a good antenna when it clearly was not radiating anywhere useful. 73 Norm
Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
Oh, if the antenna is cut to ham frequencies, there is a ham discount. Chuck WB2EDV - Original Message - From: Chuck Kelsey wb2...@roadrunner.com To: Repeater-Builder@yahoogroups.com Sent: Thursday, October 08, 2009 7:48 AM Subject: Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use Kreco has been around for a LONG time. I'd guess at least back to the 60's, maybe even the 50's.
Re: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
Thanks... I have never heard of Kreco antennas. We put a DB-201 up this evening and the repeater is working just great! The diamond is gonna have to come down for an autopsy... I don't understand why the sitemaster was showing I had a good antenna when it clearly was not radiating anywhere useful. 73 Norm - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Tue Oct 06 21:20:24 2009 Subject: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use 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 keeps away static on receive, and lightning away from your equipment. I’m not affiliated with Kreco in any way. Regards, Dan at K7MM, VU3MMW
[Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
Multi band antennas with certain types of problems can and sometimes do change radiation angle. And those problems don't necessarily give a bad SWR reading. In the case of the original (first production run) Hustler G6-370R there were design to actual production changes, which ruined the radiation angle of the antenna (most of the signal going almost skyward up). I returned 6 new antennas to Hustler via AES after having to prove the antennas were faulty. You'll notice the current Hustler G6-270r is a fiberglass product. The problem with the current G6-270r is the bandwidth is much less than 10 MHz, and outside where more than one of our 440-450 band repeaters resides. So... I can't/don't use them. On six meters I use a modified Kreco I bought surplus. s. --- In Repeater-Builder@yahoogroups.com, NORM KNAPP nkn...@... wrote: Thanks... I have never heard of Kreco antennas. We put a DB-201 up this evening and the repeater is working just great! The diamond is gonna have to come down for an autopsy... I don't understand why the sitemaster was showing I had a good antenna when it clearly was not radiating anywhere useful. 73 Norm - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Tue Oct 06 21:20:24 2009 Subject: [Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use 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 keeps away static on receive, and lightning away from your equipment. Iâm not affiliated with Kreco in any way. Regards, Dan at K7MM, VU3MMW
[Repeater-Builder] Re: 6-m Very Heavy Duty Antenna For Repeater Use
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 keeps away static on receive, and lightning away from your equipment. I'm not affiliated with Kreco in any way. Regards, Dan at K7MM, VU3MMW
