On Thu, 16 Sep 2004 08:13:06 -0400, n4lq wrote:
>What does 44 and 88 feet have to do with anything other than radiation
>pattern?
W8JI has done analysis (reported on another list, and possibly on his
website) showing that these lengths are terrible for 40 and 80 meters, even
when fed by "magic" open wire line.
Loss in small coax (RG-58, RG-8X, RG-59) is quite reasonable below 30
MHz as long as the antenna is even close to a match (3:1 or better) and the
transmission line isn't terribly long (a lot more than 100 ft). See the ARRL
Handbook and ARRL Antenna Book for a discussion of how little a moderate
mismatch really affects loss in transmission line. You WILL need a tuner to
get the transmitter not to "throttle back" due to the mismatch, but you will
get
power to the antenna and it will radiate.
I am a great believer in resonant antennas.
Jim Brown K9YC
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|