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Loggings => North American Shortwave Pirate => Topic started by: refmo on March 02, 2018, 0148 UTC

Title: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: refmo on March 02, 2018, 0148 UTC

Weak music and wobbly carrier.
0147 - sounds like "Knockin' On Heaven's Door" Eric Clapton
0150 - "Wonderful Tonight" EC
seems off or faded by 0157

Title: Re: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: digitalmod on March 02, 2018, 1646 UTC

 If you're listening on AM you would not notice a "wobbly" carrier.

Title: Re: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: KaySeeks on March 02, 2018, 1841 UTC

Quote from: digitalmod on March 02, 2018, 1646 UTC

If you're listening on AM you would not notice a "wobbly" carrier.

• If there is enough frequency movement (for example, strong FMing) they would notice it as a very distinct and recognizable form of distortion.
  
• If they are using an SDR (which has nothing to do with reception modulation mode), they could observe it visually.

Title: Re: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: ChrisSmolinski on March 02, 2018, 1852 UTC

The "wobbly" carrier lets those of us with SDRs identify certain transmitters  ::)

Title: Re: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: refmo on March 02, 2018, 2302 UTC

I would have liked to listen to it in SSB for an improved S/N ratio, but the wobbly carrier makes that very unpleasant.  The sound in AM wasn't bad, just weak and noisy copy.

Title: Re: UNID 6925 AM 0145 UTC 02 Mar 2018
Post by: digitalmod on March 03, 2018, 0003 UTC

 I have pretty much forgotten SSB because, right or wrong, unless you build a special piece the bandwidth is dreadful 2.5 kHz. Like that is worse than a telephone in a third world country.
 :o