The math isn't that hard. 200W (53.01 dBm) is about 7.6 dB over 35W 
(45.44 dBm), so the RX would have to be about 7.6 dB better than 0.15 uV 
(-123.5 dBm), or about -131 dBm which is 0.06 uV.

The antenna gains and losses cancel each other out since they apply to 
both TX and RX.

Joe M.

Nate Duehr wrote:
> Kevin Custer wrote:
> 
>> BTW:  I have one of the stations that Fred mentioned at one of my 
>> sites.  It belongs to Jeff DePolo.
>> It will run 200+ watts all day and night, and with a good MASTR II 
>> receiver (hand selected) with a Chip Angle preamp, it takes all of the 
>> 200 watts to keep up with it.  It is matched pretty well with a modern 
>> 35 watt mobile.
> 
> Now THAT I'd like to see the math on.  Just how high does receiver 
> sensitivity have to get to "balance" with a typical say, oh... .15uV 
> "modern" UHF mobile and it sending out 35W... what would the "perfect" 
> numbers be.
> 
> Someone who enjoys the math more than I do maybe will feel bored enough 
> to calculate it.  I guess you'd need the antenna gain numbers also. 
> What are you running on that system, Kevin?
> 
> Nate WY0X

Reply via email to