I modified a DB224 about 6 years ago from 15x.xxx to our repeater
pair of 144.890 / 145.490. I added 1 5/8 inches of tubing to each
loop. Noting was done to the harness and it worked pretty well for 5
years. Last fall, we were getting noise and it was decided the club
would buy a new DB224 to see if that would end some problems. It
did, I think some crud built up between the tubing I added and the
original loops. A little cleaning and some grease and I'll bet tit
would be good for another 5 years. On a side note, the new DB224 was
cut for the ham bands and the mast is about 3 feet longer and each
loop about 4 inches longer that the old ones, even after lengthening
them. I would add another 2 inches and use an analyser to see what
happened, you could always cut them shorter, but you know--- they
won't strech!
Bill WA9BA
Message: 3
Date: Wed, 22 Mar 2006 19:18:37 -0600
From: Jay Urish <[EMAIL PROTECTED]>
Subject: Re: DB222 Antenna
I saw a paper somewhere that described a mod using a long machine
screw
through the bottom of each element..
bzlljr wrote:
> Has anyone modified an DB222 Antenna from 156mhz down to 146mhz?
> the matching cables are 35ohn(RG83?)The distance would have to be
> changed between the two elements & probably the 35ohm cable may
have to
> be longer. May not be practical. Has anyone done it?
>
> Wesley AB8KD
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