[Antennas] Decibel Also

[Chris Boone]

Contact DB Products (now owned by Andrew) at their Dallas facility....their
support group will give you the exact dimensions
(http://www.andrew.com/contactus/contact.aspx?ct=5) they will also verify
that the ground radials need to be longer than the vertical
section...perhaps they can explain it to you WHY it is :)

Chris
WB5ITT

> -----Original Message-----
> From: antennas-bounces at mailman.qth.net 
> [mailto:antennas-bounces at mailman.qth.net] On Behalf Of 
> Demetre Koumanakos
> Sent: Saturday, January 08, 2005 11:46 AM
> To: semaj at suwanneevalley.net
> Cc: antennas at mailman.qth.net
> Subject: Re: [Antennas] Decibel Also
> 
> 
> Hi Jim from "down South" :-)
> 
> Extending the trombone will be easy, the lower part of it is 
> hollow and 
> can easily be fitted with one new thinner aluminum segment 
> that can be 
> bent downwards.
> 
> As for the radials, I'll first go with the 1/4 wave size as is 
> described in the ARRL Antenna handbook (18th edition, page 6-8), 
> if this doesn't work, I'll replace the radials with new aluminum 
> tubing cut at least 1/2 wave so they can be sized down by try&error.
> 
> 73
> Demetre - SV1ENS
> 
> > Good Morning,
> > 
> > I live "down South" and recently bought at estate
> > 
> > Auction an antenna you describe as a 'decibel'.
> > 
> > Vertical trombone with 4 radials - built very strong.
> > 
> > If you figure a way to tweek it down to 2 meters I
> > 
> > Would be very interested.  My first thought is to insert a
> > 
> > Sleeve into the vertical parts both up & down. And also
> > 
> > Sleeve the radials.  Perhaps we could make it 'adjustable'
> > 
> > that way.
> > 
> > 
> > 
> > KV4FE
> > 
> > JIM
> > 
> > "Down South - on the Suwannee River"
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > --
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