[50mhz] antenna 2m/6m vertical

[Chris Boone]

Using a 5/8wave series fed antenna on 2mts as a 6mtr antenna makes
sense...but going the other way is not a good idea..
A 6m whip is 3/4 wave on 2mts, not properly phased and thus has a poor angle
of radiation and less gain than a regular 1/4 vertical ...the 5/8w on 2mts
acts as a base loaded quarter wave on 6 and works as well as a full 1.4wl
antenna....Ive been running Larsen NMO150s on six for over 25 years...(in
fact have one on my company van and my Blazer :)

Chris
WB5ITT

> -----Original Message-----
> From: 50mhz-bounces at mailman.qth.net 
> [mailto:50mhz-bounces at mailman.qth.net] On Behalf Of Chris 
> Williams W6NOB
> Sent: Wednesday, August 17, 2005 7:09 PM
> To: Jose Manuel EA8EE; 6 Metros Lista D.
> Subject: Re: [50mhz] antenna 2m/6m vertical
> 
> Jose,
> 
> Yes, there are a number of dual-band and multi-band antennas 
> on the market that will work on both 50 MHz & 144 MHz. Also, 
> there are many stations that have found that a 2 meter 5/8 
> wavelength whip will act as a "loaded" 1/4 wave whip on 6 
> meters. A friend of mine has been using a Larsen NMO-150 2 
> meter 5/8 mobile whip on both 6 & 2 meters for several years 
> now and is very happy with it. Many years ago another old 
> friend  used a 6 meter 1/4 wave groundplane on both bands. He 
> explained that the antenna acted as a 3/4 wavelength 
> groundplane on 2 meters. Other commercially available 
> antennas designed to operate on both bands can be found on 
> the WWW from Comet, Diamond and various others.
> 
> I hope this help's.
> 
> 73 de Chris W6NOB