One of the problems with the multi-band antennas is the available bandwidth, which may not be enough within the frequency range where your repeater normally operates.
The Dual Band Hustler Antenna I swept didn't do well in the lower range of the 440-450 band. Their mono banders are pretty nice units... The multi-band Diamond/Comet Antennas are also fairly narrow in available bandwidth. There doesn't seem to be any way to adjust the Fcenter of a multi band antenna. If you have reflected power because the antenna doesn't match well... it's going to try and go somewhere... and that somewhere might not be a good place. Stay away from LMR-400 coax. I've had enough problems with it to easily say it's potential trainwreck. cheers, s. > "Dan Cation" <[EMAIL PROTECTED]> wrote: > > While I have not used either of those exact antennas, I have used the > Hustler G7 and one of the Diamond Dual Band antennas. We had the > Hustler G7 up at 190 feet on a 2 meter repeater on a Cement Plant for > nearly 20 years with no problem, other than damage one time due to a > lightning strike - we had to replace one of the coils and the top > radiator section. The G6 is similar construction to the G7 but quite > a bit smaller. The Diamond I have had experience with is quite a bit > lighter and does have the protected connector, which I like, but I > doubt if it would have stood up to our use at the cement plant. I'd > opt for the G6. Just make sure you use dielectric grease on all the > joints, make sure they are all tight, and seal it good before you put > it up. > > On the LMR400 issue - the cost is certainly attractive and I know at > least one radio dealer here using it on low power commercial and > Public Safety repeaters without any problems (according to the > dealer). If you already have the coax and don't mind replacing it if > you have problems, You might it a try - but keep in mind that you > might have to replace it if you have any problems with noise, IMD, or > desense. You might get lucky. If you are only running 40 or 50 feet > on 150 MHz, you aren't gaining much loss over standard RG8 style coax. > 1/2" hardline would be the best choice - you might find a shop that > has that much as a cut off or that has been taken out of service > somewhere if you look around. > > 73 and good luck > WB0SHN Dan > > --- In [email protected], "w2sxk" <w2sxk@> wrote: > > > > Goodafternoon, > > > > Me and a friend are putting up a secondary VHF repeater and have a > > antenna question. Being we are on a budget but have looked at these 2 > > antennas as options. > > > > Diamond F22A monoband base or the Husler G6-144B > > > > Any pros or cons to these antennas and which would you choose or you > > have another option? > > > > Antenna will be mounted between 30-40' on multiuse rohn 45 tower fed > > with LMR-400 and subjected to typical Northeast USA weather "North of > > NYC". Ofcourse if money wasn't an issue, I would prompt for a more > > durible antenna specifically suited for repeater use. We need to keep > > antenna size down to less then 10' in length and cost down as well. > > My choice was the Diamond F22A. It apears similiar in size and > > construction to the X-200 dual band and I have not had any issues > > with my current intallation. Any comments or suggestions??? > > > > > > 73, > > Steve - W2SXK > > w2sxk@ > > >
