[Elecraft] [K3] Using K3 for relative noise survey

[Don Wilhelm]

Dave,

You can use the Alternate VFO B display of AFV to give better resolution 
than the S-meter.  See page 36 of the K3 manual.  You must have the 
CONFIG: TECH MODE turned on to show the AFV entry.

If you want to see the difference between two values, there is also the 
DBV alternate VFO B display which will show the difference in dB between 
2 noise or signal settings.

73,
Don W3FPR

On 8/1/2017 10:17 AM, Dave Sublette wrote:

>>
>> I currently live in a townhouse and have made an offer on a few acres in a
>> more rural area. I would like to measure the relative noise levels between
>> the two locations to reduce the probability of surprises or disappointments
>> should I close the deal.  I have gotten access to a very good battery
>> powered spectrum analyzer and plan to use a tripod-mounted 6 foot whip and a
>> 20 dB LNA to measure the noise levels at each location.
>>
>> While setting this up, I though it would be interesting to try to also use
>> the K3 to measure noise with the same antenna (but without the LNA).  I've
>> written a Python script to control the K3 as it steps through each band and
>> records S meter levels.
>>
>> I'm looking for recommendations on K3 settings for this purpose.  Specific
>> questions I have are: