[JRC] NRD-545

[Brooke Clarke]

Hi Chris:

If  you look at all the high end, DSP for IF and detection, receivers 
you'll find that the NRD-545 is the only one with IF bandwidths below 
100 Hz.  The 545 goes down to 10 Hz.  Since the s/n ratio is a first 
order function of bandwidth, the weakest signal that can be detected 
with the 545 is 10 times lower than for the other receivers.  Of course 
at 10 Hz there can not be much in the way of modulation, like WWVB, the 
digital modulation on WWV,  or a carrier.  For a CW station you can 
match the IF bandwidth to the code speed.  There is also a notch filter 
that will remove a fixed tone caused by an adjacent station.
http://www.pacificsites.com/~brooke/NRD545/NRD545.shtml

73,

Brooke Clarke, N6GCE
http://www.PRC68.com

Chris Smolinski wrote:

> I'm in the market for a new receiver, and have been looking into the 
> NRD-545. I'm interested in other's experiences with this, especially 
> with anyone who has also used an Icom R-71A (my current receiver), and 
> has comparisons between the two.
>
> 73
> Chris
> N3JLY
>