Alan , thanks for the info.. I may just stick with the 400UF then. My plan was to buy the CNT-400 for the 2m Antenna and use the 400UF for the loop. and run the 600/600UF for the 435 antenna. Im trying to keep my loss to under 1 dB pr/band and with an initial run from rig to preamp being a WHOPPING 35' (insert laugh here) I may just be able to run 400 all the way across the board. Would save me a lota cash that's for sure!
If my math is right my 145 mhz system would have .525 dB Loss in just the main 35' feed line (CNT-400 @ .015 dB loss pr/foot), not including the AG-25 Preamp in which I'll take a guess at being probabally .5 - .75 dB then the 400UF @ 15' bring me up to close to if not slightly more than 1.5 dB.. and obviously more on 435.. I'll have to make some precise measurments with some 12ga wire and see what my actual feed length will be, I may be off quite a bit and in just eye balling it I may be able to have a main run from rig to pre-amp of 25', if that's the case I'll just use the CNT400 for both band as main feed and the UF for the rotor loop.
I haven't been on the air in a few years.. and all this R.F. talk is making me feel like a kid in a candy store.
Keep in touch
-Steve Raas
N2JDQ
Steve,
I use the 400UF as do many others, and it is an excellent choice. Unless you have an unusual situation, going to 600UF doesn't make a lot of sense up through mode L, and probably mode S. The run just isn't that long. Another good choice is the BuryFlex, which has only very slightly greater losses than the 400UF.
Alan
WA4SCA