M2 makes one that I used before switching to microwave IP links Matthew Kaufman
(Sent from my iPhone) On Jul 1, 2010, at 4:23 PM, Dave Karr <[email protected]> wrote: > At 05:33 PM 7/1/2010, DW wrote: >> Larsen used to make a heavy duty yagi in the 430-450 MHz range >> (+11dBi ) for under $100.00. >> They still make the YA34xxYN series, but they don't list the ham >> split in the latest catalog. >> I need it for a control link from my repeater site (high winds, >> ice, etc..). >> >> Does anyone know of a decent 440 yagi that is still being >> manufactured? >> >> Thanks, >> David, AC4JF > > I've been specifying the PcTel (Maxrad) BMOY series antennas for > installation in a system where they had been using the MYA > series. The MYA has an exposed gamma match, which I'm not thrilled > about, and is very time consuming to tape up the RF connection, and > thus generally not done correctly...but there are ~100 of those in > use for about 9 years now without any specific antenna failures that > I'm aware of. > > The BMOY series antenna places the N connector on the rear of the > boom, and the driven element matching is internal to the > antenna. Sealing the antenna connection is very easy. There are > about 70 more BMOY series antennas in use in this same system for > about 7 years now, and again I've not heard of any failures, though > on one that I had been using for DFing interference, I did manage to > crack off the driven element base insulator. In DF use, I did notice > that the 5 element BMOY's pattern wasn't as clean as an old 5 element > Decibel Products antenna I also had on hand. > > The MYA's tend to have finicky tuning, and I've never seen one sweep > correctly out of the box. Close enough probably, but not optimized > either. The BMOY's are broad band, with one model covering 406-440 > MHz and another from 440-480 MHz. > > At cost, they are a good value, with a BMOY4405 going for about $100. > > > There are better, and correspondingly more expensive, antennas, but > this is one that I've used that's proven to be a good value. > > > I'm interested in hearing others comments on this topic as well. > > > --Dave / KA9FUR > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
