TLN
The power mod will give you a LITTLE more range but at the expense of much greater power consumption.
I am starting to think through the viability of running broadband high gain UHF Yagis. 12Db gain from an antenan less than 1 metre long will have very big performance between known fixed points.
The advantage of yagi beams is that you also concentrate receiver focus as well, so noise should be lower too.
Re the Backpack I've a solution that works really well. if you use a alloy framed old school ruck sack its possible to mount a swivle-able truck mittor antenna mount on the frame. This is mounted on the side frame of the rucksack. The antenna is upright when walking, and when the pack is laid down the antenna mount is swivelled 90 degrees so the antenna is again upright. The frame of the rucksack acts as a groundplane.
With one of these antennas,
http://www.wsplc.com/acatalog/MULTI-RANG...rband.html you will be good for PMR446, UHF, VHF, CB and ham bands down to 80 meters.
I guarantee thatthis works well, as this is my mark 1 manpack configuration that has served me well for a good while now. Photos avail if you need anidea of how it looks.
The multi- ranger 9 is also able to be used as a base antenna, so if you get a UV R5 it'll convert that to a base unit too.....
Using an R5 type radio as a base station its worthwhile getting a speaker mike, 12v power converter, and of course am antenna converter. Re antenna converter, be very carful as these units are rather fragile in that area. Also, to remote the antenna you will need very high quality coax designed specifically for UHF, and even then cable runs should be minimal as signal drops off rapidly over long cable rund ( both TX and RX)
Search
Calendar
Help
