Rcvr Sensitivy tests

[Clifford Buttschardt]

Let me add to this list.  I used a HP 606 signal generator with a ten db
pad in line.  There has always been some doubt about calibration between
HP and other manufacturers, so the ten db pad eliminated this!
For the TS930 transceiver, -118 dbm. (CW narrow).   Cliff K7RR

On Sat, 2 Jan 1999, Andre' Kesteloot wrote:

> Some of us performed sensitivity tests various receivers this afternoon.
> 
> Basically, we used a HP generator tuned to 136 kHz, connected it to the
> receiver under test,  and reduced the generator's output until we could
> no longer hear the signal. Not a very scientific test, but good enought
> to help us select the receivers we will take with us for the LF
> receiving test at Nags Head on 15-18 January
> 
> The minimum output power we could reliably measure was -127 dBm into 50
> ohms (calibrated against another HP spectrum analyzer)
> 
> Rycom 3121 (transistorized)  -106
> Icom IC-735    -116
> Rycom 2174A (tube type)     -116
> Icom IC-720    -126
> Cubic (US Navy rcvr)    > -127
> NRD 525    > -127 dbm
> Icom R-71 A    >-127
> 
> 73
> Andre' N4ICK
> 
> 
> 
>