[amsat-bb] Semantics, Continued

Clint Bradford clintbradford at mac.com
Thu Dec 16 16:44:04 PST 2010

>> ... can you name a specific manufacturer that claims their equipment is "Full Duplex" when it isn't ?

MY definition of "full duplex" is met only by two or three individual RADIOS currently on the market.

I was hoping there'd be little or no argument here - the AMSAT-BB - on this point.

When AMSAT wants a radio to work the FM birds to be "full-duplex," the definition of "full duplex" is: Able to monitor 440 on one VFO while keying up on 2M on another.

I know this to be true - 'cause Drew counters me every time I mention that it isn't mandatory to work the FM sats in full-duplex, but preferable.

So ... Every manufacturer that claims "full duplex" to us SHOULD raise eyebrows. "Cross-band repeat" is not OUR definition of "full duplex," either. A unit that cross-bands doesn't necessarily allow the monitoring of the RX band while transmitting.

Why is there ANY debate on this??? This has been AMSAT gospel since at least 1993 or 1994 when I started getting involved.

Clint, K6LCS

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