ICOM IC-R3 Receiver
The best U-R-Radio I have found

U-R-HERE RADIO - MY UNSCIENTIFIC TEST

Using a 2-1/2 watt transmitter with a "unity" gain antenna and the Fox box placed on the ground. I also used a Garmin Street Pilot to measure distance.

My Standard C5900 mobile radio with a roof mounted (drilled) antenna I was able to travel outbound about 5 miles before loosing the signal.

With the Icom IC-R3 with a "unity" gain antenna inside my car and the squelch set to #1, I was able to get about 2.1 miles from the transmitter (Att-Off).
With the attenuator set to #1 I could get about 1.1 miles from the transmitter.
Attenuator set to #2, about .6 miles out.
Attenuator set to #3, about .3 miles out.
Attenuator set to #4, about .1 miles out. Full scale occurred at about 250 feet from the transmitter.

MY CONCLUSIONS of this new U-R-HERE RADIO

I used the maximum distance out from the transmitter as my minimum range due to the poor height and antenna used on my Fox Box.

I then doubled the distance to give me a guide (approximation) of how far I'm out from a typical transmitter on a real Fox hunt.

Notice each step of the attenuator cut the distance from the transmitter perfectly in-half. I wonder if Icom knew what they were doing when they setup each attenuation step. I would like to know the db levels used in each step and if these steps concur with RF theory.

Attenuator off  2 to 4 miles

Attenuator #1   1 to 2 miles
Attenuator #2   1/2 to 1 mile
Attenuator #3   1/4 to 1/2 mile
Attenuator #4   1/8 to 1/4 mile
Attenuator #4   250 feet at full scale.

THE IC-R3 USED WITH A BEAM TO GET A BEARING

I'm not sure of the IC-R3's sensitivity. I know the Standard C558A handheld is the most sensitive radio that any of the other hunters have used, picking up a weak Fox when others can't. I just hope the IC-R3 is close to the C558A's sensitivity.

I used the IC-R3 with my 4 element Arrow beam, cranking in #3 on the attenuation knob and read a bearing from Mt.Diablo while on one of my hunts.

Looking at the Direction Finding screen of the IC-R3 and viewing the signal strength graph, I was able to determine a bearing very quickly. I really mean it, it was easy and very fast. The bearing was right on target and super fast.

I think looking at a graph of your signal strength, knowing what the signal could be at its highest reading takes the subjective-ness out of determining where your beam should be pointed to read a bearing.

I think this receiver can be used as both a beam hunting radio and a U-R-Here radio.