[NLRS] 2m-440 Rigs / 2M. Sprint Query ??

[Dr. Gerald N. Johnson]

Transmitting broadband white noise is not unique to the Flex. Many HF 
radios are known to do that. Comes from generating SSB or CW at the 
level of a fraction of a volt, filtering it down to SSB bandwidth, then 
running it through 100 dB of broadband gain with two or three mixers 
adding in more then their share of noise and finally maybe band limiting 
with ham band side band pass filters at the 0 dBm level before the final 
burst of gain to +50 dBm with that section of the transmitter flat from 
1.6 to 57 MHz. The band limiting filters tend to not be a part of rigs 
that easily convert to continuous coverage, so there's more than 100 dB 
gain from signal generation to antenna with maybe a low pass filter, no 
bandpass filtering. And when over driven the splattering is not limited 
in bandwidth either.

73, Jerry, K0CQ

On 3/26/2013 9:22 AM, Ronald Bergantzel wrote:
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> Good Morning !! I really think that the Flex radios are the 'thing' for V/U operating BUT .... It has recently been discovered that a white noise is being transmitted below the Flex Radio's actual xmit freq ( check Moon Net archives for the article ). Being that I sometimes run QRO , I do not want any white noise being transmitted here ..... Just a FYI !!! 73, Ron KA0RYT  P.S Who is going to be on next Monday Night for the 2M Sprint ???
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