[TenTec] Orion Sweep - Mark

[ac5e at comcast.net]

Hi Mark: As best I can tell by looking the sweep is in 250 Hz segments with bandwidth cranked down to 100 Hz. . That is, on the narrowest sweep range  of 4.5 kHz there are just over two "digital blocks" per 600 Hz indication.  Skipping the 9 kHz sweep width to the 18 kHz width, there seem to be 10 digital segments per 2.5 kHz segment with the 100 Hz bandwidth. 

I prefer the 36 kHz sweep width myself since the stations I'm usually interested in tend to hang around fairly narrowly defined band segments. And yes with a little practice you can usually tell by the bandwidth what sort of signal you have indicated on the sweep. 

At the moment an SSB signal at 14.197 is clearly just over 2500 Hz (a half a 5 kHz division on the sweep) wide, while a 75 M AM signal looks like it's close to 8 kHz overall. The digital modes are usually two to three segments wide. CLEAN slow CW shows up as a narrow spike a single segment wide, CLEAN faster CW is somewhat wider - and some of the click boxes are three or four segments wide. 

Hope that helps 

73  Pete Allen  AC5E
--
Never squat with your spurs on


> John,
> 
> Thanks for the reply. I didn't recall a sweep bandwidth adjustment, just the
> sweep size. I wonder if I missed that or if it was added since last summer?
> Is the sweep bandwidth related to the receiver bandwidth?
>