[d-star] [al-dstar] 23cm D-STAR New Antenna Requirements

Fri Aug 31 06:37:33 CDT 2007

We can report the following on 23 cm antennas after five years of running a
23cm repeater and now a fleet (4) of RP1Ds in DD mode 

1.       Comet GP21s are powerful but have badly engineered bases- the
little bolt falls out due to wobbling (maybe hold in place with a hose
clamp?) and then the whole antenna rotates and ruins the hardline connector

2.       Comet GP95s are nice tribanders- they are special order but work
great - one piece whip !!

3.       Comet GP98s are powerful but feature the little black plastic
joiner on the whip and are not sturdy enough for commercial sites IMHO

4.       MFJ makes a little 99.00 tribander - 1532N- that is shown as two
piece but is really one piece - it's like a 5' GP95 - so far so good I have
one here

5.       M2 makes a 4' beam that has a carbon boom that sags..not bad
otherwise

Erik Westgard NY9D 

www.14567.org 

From: al-dstar at yahoogroups.com [mailto:al-dstar at yahoogroups.com] On Behalf
Of Tom Hammack
Sent: Thursday, August 30, 2007 9:07 PM
To: al-dstar at yahoogroups.com
Subject: Re: [al-dstar] 23cm D-STAR New Antenna Requirements

What about a good coffee can antenna with some data that the rest of us 
non techie antenna folks can understand. You know like actual 
construction instructions.

Thomas (Tom) Hammack, Jr. W4WLF
Katrina Refugee in Gulfport, Mississippi
http://freepages.genealogy.rootsweb.com/~hammack/katrina/

Mark Thompson wrote:
> 
> 
> ----- Forwarded Message ----
> From: Kent Britain <WA5VJB at FLASH.NET <mailto:WA5VJB%40FLASH.NET>
<mailto:WA5VJB%40FLASH.NET>>
> Sent: Wednesday, August 29, 2007 1:29:43 PM
> Subject: Antennas
> 
> Shortly CQ and CQVHF will be publishing a family
> of 23 cm antenna projects aimed at D-Star applications.
> 
> Currently prototyped are 4, 6 and 10 element Yagis
> centered at 1253 MHz for Data and another set
> centered at 1280 MHz for repeater type use.
> 
> Also prototyped is an easy to build patch antenna that
> will work across the entire 23 cm band.
> 
> Any other antennas you would like to see?
> 
> 73 Kent WA5VJB
> 
> __________________________________________________________
> Building a website is a piece of cake. Yahoo! Small Business gives you 
> all the tools to get online.
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> [Non-text portions of this message have been removed]
> 
> 

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