[VHFcontesting] FM antennas

[peter h]

1620pst 29nov17

Hello Sean:

I echo Mark's comments from  both SoCal & the PNW.

K.I.S.S. is still very important. That being said, I primarily use whips for 6m/2m/135cm when in motion (& sometimes when stopped too.)
My typical yagis are small enough that to gain a new multiplier, I can rotate the beam 90 degrees.

bt73
Pete, N6ZE of DM04ne & CN87tw
 


-----Original Message-----
From: Mark Spencer <mark at alignedsolutions.com>
To: Sean Waite <waisean at gmail.com>
Cc: VHF Contesting <vhfcontesting at contesting.com>
Sent: Wed, Nov 29, 2017 11:00 pm
Subject: Re: [VHFcontesting] FM antennas


My $.02 worth...

I focus most of my contesting on modes other than FM. That being said I try to have a reasonable FM setup for 2M and 1.25M running all the time. I usually just run mag mount whips on top of the cab of my pickup truck while roving. 

6M, 70 cm, 33 cm and 23cm FM is possible for me but only by prior arrangement. I don't recall ever making a 6M contest qso.

I believe I have made enough random FM qso's on 2M and 1.25M to make the effort worthwhile. 

 Last contest I made a conscious effort to cut down on clutter in the truck and left the 1.25M whip at home, I ended up picking it up at the tail end of the contest to gain a final multiplier and had to enter as an unlimited rover as a result. I won't make that mistake again.

73

Mark S
VE7AFZ

mark at alignedsolutions.com
604 762 4099

> On Nov 29, 2017, at 10:49 AM, Sean Waite <waisean at gmail.com> wrote:
> 
> Since we're always thinking of the next station improvement, I've been
> thinking about the best way to implement FM in the rover.
> 
> We've found that it's worth carrying the gear. We don't get many contacts,
> but they are out there and having the ability to make them on demand does
> get us points. Right now, I have a 2/70 vertical that is used for FM, just
> a mobile whip. In January for our run 'n gun I'll probably move to a
> triband whip.
> 
> For the stop and shoots, though, we'll be better set up to run beams. We
> have a couple of the small Arrow yagis available that wouldn't be too
> difficult to strap onto a mast and have a v-pol beam available for the FM
> radios. Small LPDAs like the Elk satellite antenna are also another option.
> 
> This would give us positive gain on FM...but i'm not sure it's worth it. FM
> contacts are mostly opportunistic, either a periodic call on 146.52 or just
> hearing someone and grabbing the mic real quick. The directivity a yagi
> would give us might blind us to some of the nearby stations calling (though
> the arrows aren't particularly narrow) if they are off the side of the
> beam. The other drawback is that it'll take a little longer to set up if
> we've got another beam or three to attach to the mast and cable up.
> 
> What do other people do? Maybe better to have some always-connected, more
> efficient verticals on the roof the car and sacrifice a bit of gain?
> 
> Looking forward to your thoughts.
> 
> 73,
> Sean WA1TE
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