[TenTec] UCW and LCW

[Martin AA6E]

Steve Hunt wrote:
> John,
> 
> I'm not an Orion owner, but if it's the same as most other rigs .....
> 
> When switched to UCW the receiver will pick up CW signals that are higher than the displayed frequency
> When switched to LCW the receiver will pick up signals that are lower than the displayed frequency
> 
> So using your example, when you're tuned to 7019 UCW you can hear signals at 7020 because they're higher. If you tune to 7021 and select LCW you'll hear the same signal because it's now lower.
> 
> I think I'm saying the same as everyone else but in a slightly different way :)
> 
> Hope this helps,
> .
> 73,
> Steve G3TXQ

Yes for some radios, but not the Orion.  The Orion "dial" frequency is 
the center of the passband for LCW or UCW if PBT=0.  An incoming signal 
at that freq. produces a tone at the sidetone/spot freq., e.g., 700 Hz. 
  The difference between LCW and UCW is what happens when you tune off 
frequency, say up by 100 Hz.  For LCW, the audio tone will go up (like 
tuning an LSB voice signal). For UCW, the tone goes down (like USB voice).

I have never seen the need for both LCW and UCW.  I always use LCW 
myself.  Just personal preference.

73 Martin AA6E