Several links at Connie's website http://www.k5cm.com/
Jerry W4UK
At 07:08 PM 10/9/2010, Richard W. Solomon wrote:
Where can I find some literature on measurement equipment and techniques ?
Thanks, Dick, W1KSZ
-----Original Message-----
>From: Jerry Flanders <jefland...@comcast.net>
>Sent: Oct 9, 2010 4:00 PM
>To: Jeff Singer <jsin...@i1.net>
>Cc: flexradio@flex-radio.biz
>Subject: Re: [Flexradio] My Rookie Performance in the Recent FMT
>
>I did, and got within 27 mHz for one of the runs with my GPSDO'ed
>5000a. Better than 0.1 Hz on three of the four.
>
>Brian, WB6RQN, got within 5 mHz on one!!! I got within 10 mHz on a
>test awhile back.
>
>One problem with the 5000a is that the tuning step size is pretty big.
>
>Sound card programs like Spectrum Lab or FLDIGI can help. I have used
>both in the past.
>
>Jerry W4UK
>
>
>
>
>At 06:14 PM 10/9/2010, you wrote:
>>Thanks for the alert on the K5CM Frequency Measuring Test a few nights ago.
>>
>>That test uses two stations to send a CW carrier on 160, 80 (twice) and 40
>>meters. A FMT is something totally new to me. My only preparation was to
>>calibrate the radio carefully against WWV using its built-in scope. My
>>receiver was in the DSB mode. I used the scope to guess-timate
the frequency
>>to an additional decimal point.
>>
>>Few entrants use a radio alone. Many have costly GPS based frequency
>>calibration sources or the like and complex schemes to interpret the
>>frequency. Experience counts. So does speed, since you only have three
>>minutes to come to a conclusion. In other words, my entry wouldn't threaten
>>the experts who come within one or two MILLI-hertz.
>>
>>But my stock Flex did very well. Three of my four readings were within 1/2
>>Hz. On 40 meters I was off by .96 Hz. QRN on 40 made the weak signal
>>difficult to read on the scope. Still, accuracy was better than .25 PPM on
>>each reading, well within Flex specs. Anyone else participate?
>>
>>Jeff K0OD
>>
>>
>>
>>
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http://www.flexradio.com/
>
>
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