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CB is 27 MHz more or less. quarter wave is 246/27 = 9.1 ft, or 109 inches, about what we use for full quarter wave CB whip. But, in coax we must multiply by velocity factor which is 0.66 in RG-58. That makes quarterwave in coax of 6 ft. Need ODD multiple of quarter wavelength in coax to...

As BigJimCruising said, just use what you need. Tune the antenna for least reflected power at the radio end of the coax. The radio will be happy and output full rated power. So, why all the recommendations for an exact length of coax? Because if you want to be able to actually know the...

Uses for a Unimog besides expedition: Today I spent a few hours with front loader and backhoe contouring around my daughters home. Other common jobs are mowing (7' rotary cutter), pasture conditioning, disking, splitting wood, dragging logs out of the woods, sawing firewood with hydraulic...

With two mikes it's easier to remember to NOT say '10-4 good buddy' on the 2 meter!! And it's equally embarrassing to give your ham callsign on CB. Bob

You might verify the hole size will accommodate the ball. Those holes look a little small. Your idea is a good one.

The Optima's I've used tended to develope higher cell resistance when older and abused. They then needed higher voltage to charge properly, higher than a normal car system provides. IMHO charging at 14v is not charging your battery. You must monitor not only the voltage but the current...

It's interesting that over the years the "absolutely required" winch capability just keeps creeping upward. Physics must have changed. Not too many years ago a 6000 lb vehicle could be winched out with even a 2500 lb pull winch. But, that required some planning and a little prep work with a...

I also found that a 14.5 will 'fit', but, the fit is so tight on my truck (ex-RW-1 bed) that even with the tire aired down to minimum to hold the bead on, I can barely manage to place the tire in the slot. To test the fit, I had to drive it into place with a 20 lb sledge hammer. Hmmmm, maybe...

I have a camper on my truck with similar conflicts. An antenna on top of the camper gets to be quite tall, but top center of the camper would be an ideal antenna location. I chose a front bumper mount for my main HF antenna, a Hustler antenna setup. Centered on the front bumper the antenna...

I like the Michelin XL radial tires. I have run 12.5's on several 406 and 404 Unimogs for many years and on my U-1300 (14.5 x 20) for about 3 years. The most wear experience, mileage, has been on the U-1300 having put on 70,000 km in that time. I wore out the original XL's in about 20k km...

Seems curious to me that so many people are so adamantly negative about a vehicle they obviously know little about. Bob

I built a center mounted winch into my 1957 Unimog flatbed. Perhaps some info would be of use to anyone wanting to do the same thing. The winch pulls double line rear or double/single line front. Either end is usable without moving cables or the winch. The bed was built with the winch system...

For 2 bucks you can't go wrong. However, from your description of the failure (loud volume all the time) the problem is probably loss of connection to ground on the low side of the potentiometer. The pot acts as a voltage divider. It works like this: the high level audio comes in to one end...

Every CB'er I ever talked to was an expert! :-)

I also have a 10' NCO Alaskan from about 1970. The pump and cylinders are easy to rebuild. I'd suggest calling Alaskan Campers and get the kits for the cylinders (to have available if/when they start leaking) and for the pump. The kits are just little envelopes with o-rings. They will need...

The price today would be based on someone's desire to have it, not on performance, for sure. It sure does bring back memories for me. I was just getting started in ham radio when the R-100 came out. It was "the" receiver I would have given anything for (except of course the $129 or so it...

I have always liked them but never owned one. I did see one a few weeks ago at Coco's Corner http://www.bajaexpo.com/coco.htm . There's probably not a rust problem there in Baja either :-) Picture below Bob

Sometimes simple is better, especially if it's going to lay around in your truck. I like the crossed needle SWR meters because they give you an idea how the antenna is performing (reflected power), forward power out indication, how the radio is transmitting, and cost is usually well under $100...

Availability is variable. Sources of US radios are scarce because of the policy to destroy such jewels instead of selling them back to the original buyers (us taxpayers!). Foreign radio equipment is more available. Many forums cover military radios, portable use, and availability. On Yahoo...