[dstar_digital] Re: TRYING TO FIND Antenna Specialist 23 cm NMO mount mobile Antennas
Diamond actually makes a NMO monoband for 23cm... http://www.rfparts.com/diamond/nr124.html I've got one, and it seems to perform well. Would have preferred a Larsen or Maxrad, but... Cheers! Lee --- In dstar_digital@yahoogroups.com, Evans F. Mitchell; KD4EFM / AFA2TH / WQFK 894 [EMAIL PROTECTED] wrote: Greetings all, I am on a mission. I have in my hands an antenna ONCE produced by Larsen Antennas, it's a 3dB Gain, NMO mount, 1.2GHz Mobile antenna. Now that Larsen Antennas had bought out ANTENNA SPEC., I am at a loss for finding this neat 16 inch NMO antenna. It has the famous Larsen black base that you would find on the 800/900 antennas but the whip has two one turn coils and is in a black finish. The base label has the word SPECIAL on the bottom and Larsen Antenna on the top of the label. Pretty much looks like a feed thru type of Larsen Base, other then the tuned whip for 23cm. I would be interested in locating some of these for use in Florida. This antenna was purchased at AES Orlando back in 1995. I have not been able to locate any sort of antenna resembling this one I have, as it seems the Diamond N Mount tribander and I think two others, is all I have been able to Google. If anyone knows a contact at Larsen could you pass this on and find out if it can be special ordered still? IF a photo is needed, I will try to see if photos can be uploaded to the group photo folder. If not, I will try to push a photo over to our KJ4ACN gateway for people to take a look at it.. http://dstargw.kd4efm.org/larsen.html Thanks. Evans F. Mitchell KD4EFM / AFA2TH FL; USAF MARS GMRS: WQFK894 D-STAR 145.670 Simplex and KJ4ACN LKLD, FL Certified Emergency Vehicle Technician Law Enforcement Veh. Installations, L-1 by: EVTCC, Inc. PLEASE TAKE NOTE KD4EFM.ORG EMAIL / WEB SITE IS NOW OUT OF SERVICE PLEASE CHANGE YOUR ADDRESS BOOKS TO SHOW: [EMAIL PROTECTED]
[dstar_digital] Re: CHIRP: An open-source programming tool for ICOM radios
If you're looking for a wish list... Support for programming the repeater modules and the repeater controller under Linux would be a joy. Go figure that the GW runs on Linux, but you need Windoze to set the frequencies in the repeater modules! Cheers! Lee VE7FET
[dstar_digital] Re: Inside Chassis coax - lossy
That's a pretty broad statement that needs a qualifier... they work well in the proper application. Most UHF mobile duplexers, are just simple notch types that will offer you some isolation from your own transmitter, but not from anything or anyone else. Even then, you only get about 65dB of isolation... so you better be using low power. They work well for portable repeaters and duplex subscriber units... real repeaters use real duplexers. Lee
[dstar_digital] Re: Inside Chassis coax - lossy
Hah, lets not go down that rat hole again. ;) I wasn't referring to the power handling capability of the mobile duplexers, as I was more trying to make the point of how broad their pass is. With an easily overloaded RX (think a mobile masquerading as a repeater receiver... ala D-STAR and others), in a typical high RF repeater site, a mobile duplexer is inviting trouble. I have a bunch of old Harris radios, with said mobile duplexers built in, and they work great in our high-speed packet backbone, with links using between 5 and 30W. BUT, they also have a manually tuned pre-selector on the front end to keep all the junk out. Cheers! Lee --- In dstar_digital@yahoogroups.com, Charles Scott [EMAIL PROTECTED] wrote: Lee: Sorry, but just because I'm feeling contrary today I have to ask. Didn't we just have a discussion about how you don't need to run much power for a repeater? Most of the mobile duplexers are fine for 25-50 Watts. I have one repeater that runs 15 W out with about 7 at the antenna and it covers out to some 60 miles for mobiles. It's a real repeater--I think. Chuck - N8DNX
