You'll need very low loss feedline, something along the lines of LDF4 heliax
to take full advantage of it. So, that means working with "N" connectors
until just before it goes into the bag phone. Fortunately for you there's s
glut of that stuff on ebay from all the upgrades cell phone carriers are
doing.

Also, make sure that the phone you're relying on will be served for years to
come. Analog service is under review for possible turndown here in the US by
2008 or so.

You might consider backing a couple of spare 12v batteries (or whatever size
it requires) to ensure an adequate supply of power.

The whole point of the yagi is a directional antenna, so it will be best
suited for stationary applications.

"Tony VE6MVP" wrote in message
...
Folks

So I'm thinking about emergency communications and it seems to me that
an 800 Mhz Yagi antenna would be useful. I have one of those old
Motorola bag phones which I use when travelling in rural Alberta.

It works nice especially when on a 3' mag mount antenna on the vehicle
roof but it seems to me a Yagi up 20' might be useful at times.

Tony