Speaking of Nautel SWR fold back, we had a VS2.5 feeding a three bay antenna. Couple winters ago the SWR went up and the transmitter folded back to about 20 percent power, but stayed on the air feeding it’s two translators just fine. It stayed that way a couple weeks till an engineer finally made it up the snowed in mountain site on a snowmobile. He found the entire 60 foot tower laying on the ground with most bays buried in the snow but some-how still on the air. The top bay was actually dangling out over a cliff, probably why the signal was good enough to feed the two translators. We had a temp antenna put up (salvaged top bay) till a new tower could be erected the following Summer.
From: Jim McDermott [mailto:firstname.lastname@example.org]
Sent: Wednesday, June 13, 2018 2:13 PM
Subject: Fwd: Re: [CRTech] Transmitter Suggestions
I have 3 Nautels and two of the Gates Flexivas. All are fairly reliable. The only problem I have had with the Flexivas is with icing and power foldback. It has been my experience that they don't really foldback much. If your SWR goes above 1.5:1 they are made to just shut down. Now that might not be a problem if you have radomes, autosensing deicers or if you don't get ice storms. For me, it means I have had stations off the air until the ice melts off the antenna.
President, Lake Area Educ Broadcasting
Spirit FM Radio & The Pulse Channel
Lake of the Ozarks, MO
www.spiritfm.org -- www.pulsechannel.org
On 6/13/2018 4:04 PM, Dave Obergoenner wrote:
Over the past few years I've installed a few GatesAir FAX series xmtrs (up to 10kw), and the results have been fantastic. They have been noticeably more reliable than the hand-full of Nautel boxes (again, up to 10kw) I've installed, which came with a variety of problems right out of the box.
My thought is, if a US manufacturer has a product that's as good (or better), and for the same (or better) price, they deserve a shot. I gave GatesAir a shot, and have NOT been disappointed! As long as they keep turning out such great products, for such competitive prices, they will have my business. We also had some rather unpleasant interactions with customs trying to get parts out of Nautel. I don't think I wanna go there again...ever.
We just received a $10,000 grant to go towards the purchase of a new transmitter here at KCFY. I already know that Nautel is a really good transmitter if you can afford it. I'm really looking for opinions on some other options. Anyone using GatesAir Flexiva Solid State Transmitters, or Ecreso Solid State Transmitters. Our plan is to move our current QEI Transmitter to the backup position and put a new transmitter as the main.
Appreciate your thoughts!