[Elecraft] sensitvity k4

[Joe Subich, W4TV]

On 2020-10-12 8:22 PM, Don Wilhelm wrote:

 > In general, the local noise will mask anything lower than -135dBm.

That may be true for the lower HF bands.  However, on 6 meters or when
using the K4 as an IF for VHF transverters and/or EME the noise level
will be as much as 20 dB less than -135 dBm.  That may even be true
with directional antennas above 20 MHz at suburban locations.

73,

    ... Joe, W4TV


On 2020-10-12 8:22 PM, Don Wilhelm wrote:
> Richard,
> 
> I don't know the answer, but when you get receiver sensitivities better 
> the -135dBm, the exact sensitivity numbers do not mean much unless you 
> have an extremely quiet location.
> In general, the local noise will mask anything lower than -135dBm.
> I expect all K4s models to have better then -135dBm sensitivity.
> 
> 73,
> Don W3FPR
> 
> On 10/12/2020 7:52 PM, Richard Donner wrote:
>> Anyone have an idea which version of the k4 would have the most 
>> sensitivity
>> for weak signals?
>> Thanks  Richard
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to lists at subich.com