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Re: Repeater Advice

Posted: Wed May 22, 2013 7:16 am
by FMROB
They are usually built well, espicially sinclairs. The phasing harnesses usually crap out on all of them. I would never use them in a coastal situation. I may have posted earlier, I never have noticed any great coverage performance from them as compared to a fiberglass omni, if you compare them for omni performance. Just my 2 cents.

Re: Repeater Advice

Posted: Wed May 22, 2013 10:25 am
by KG4LHQ
Thanks for your input Rob.

I am very satisfied in the coverage. I had the option to put up a Fiberglass and actually have an antenna to do so but went with the 8 bay dipole. I don't anticipate any problems

Re: Repeater Advice

Posted: Wed May 22, 2013 1:28 pm
by FMROB
KG4,

You should get some good mileage from that antenna. Its is just so strange, as we just have never had good luck. I have used a bunch of them, did installations with those units stacked uhf/vhf, uhf/uhf for some space saving installations. What is weird is that RFS has almost discontinued that entire line except for a few models and band splits. I tired to get a t band unit, and it was NLA. oh well. Rob

Re: Repeater Advice

Posted: Wed May 22, 2013 2:07 pm
by escomm
FMROB wrote:KG4,

You should get some good mileage from that antenna. Its is just so strange, as we just have never had good luck. I have used a bunch of them, did installations with those units stacked uhf/vhf, uhf/uhf for some space saving installations. What is weird is that RFS has almost discontinued that entire line except for a few models and band splits. I tired to get a t band unit, and it was NLA. oh well. Rob
Am I confused? I was under the impression the discussion was about Andrew?

Re: Repeater Advice

Posted: Wed May 22, 2013 7:04 pm
by Bill_G
FMROB wrote:They are usually built well, espicially sinclairs. The phasing harnesses usually crap out on all of them. I would never use them in a coastal situation. I may have posted earlier, I never have noticed any great coverage performance from them as compared to a fiberglass omni, if you compare them for omni performance. Just my 2 cents.
We put them up, and 15-2 years later we take them down without a problem ... except when big wind takes out the tower or ice loads everything up until something breaks. You know. I like them because they are quiet. Very low noise from wind swaying the antennas. Broadband has already been mentioned. You can usually craft the pattern too, so you can land more energy towards the intended service area. Natural downtilt too. OTOH, the new low PIM antennas are just as quiet, and take bad weather very well. But, they are twice as expensive, and kinda heavy.

Re: Repeater Advice

Posted: Wed May 22, 2013 8:45 pm
by RFguy
FMROB wrote:They are usually built well, espicially sinclairs. The phasing harnesses usually crap out on all of them. I would never use them in a coastal situation.
I have never had a phasing harness fail on the hundreds we have deployed over many years, but we only use antennas with internal phasing harnesses (i.e Sinclair 210's and 310's). I suspect this may be more of a concern for external harness models. We are coastal here.

Re: Repeater Advice

Posted: Thu May 23, 2013 12:26 pm
by FMROB
RFGuy, yes I would imagine that the units that are externally mounted like the telewave and rfs units are much more prone to failures.

Escomm, I guess we were, but Id thouhght id mention the RFS info.

Re: Repeater Advice

Posted: Fri May 24, 2013 2:36 pm
by wavetar
We have tons of Sinclair dipole antennas installed here on the East Coast (Nova Scotia) with never an issue, some of them 20+ years in service...single, dual, 4-bay, frequency combo, etc. We've also used Comprod quite extensively with no issues yet either. I'll choose a dipole almost every time for just about any installation, even where someone else might save $50 and use a 201/301 ground plane antenna, simply due to the no-hassle factor afterwards.