RX or TX?

[Eastie]

Hi everyone,

When programming my scanner..

Do I want to program the RX or the TX freqs?

Thanks in advance!

 

[N2JDS]

The RX for the most part. But you can do the TX also, that would tell you if the sender was close by, but not needed.

 

[RKG]

What marine channels are you referring to that are not simplex?

Since you refer to "scanner," I assume you are not referring to HF channels. The non-simplex HF channels are not repeated, so you have to switch back and forth between the "ship" freq and the "shore" freq in order to hear the whole exchange.

 

[jackj]

If you are programing a repeater into your scanner then you want to program in the Tx frequency. A simplex system will only have one frequency.

 

[WA1ATA]

What marine channels are you referring to that are not simplex?

Since you refer to "scanner," I assume you are not referring to HF channels. The non-simplex HF channels are not repeated, so you have to switch back and forth between the "ship" freq and the "shore" freq in order to hear the whole exchange.

How many years has it been since you heard someone on the "shore" freq?
The VHF marine operators have pretty much been replaced by cellphones in most areas, at least in the SE Massachusetts area.

So everyone is only using the simplex or "A" channels in the 156.25 through 157.425 MHz range. The 161 MHz channels don't seem to be active, except for AIS and DSC data.

The marine operator channels of 24-28 and 84-87 seem to be completely dead on both sides.

Maybe it's different in your area. Maybe it's different somewhere else in the world, but from what I've seen, the only channels worth monitoring are the 156.6 through 157.425 sets.

 

[RKG]

How many years has it been since you heard someone on the "shore" freq?
The VHF marine operators have pretty much been replaced by cellphones in most areas, at least in the SE Massachusetts area.

So everyone is only using the simplex or "A" channels in the 156.25 through 157.425 MHz range. The 161 MHz channels don't seem to be active, except for AIS and DSC data.

The marine operator channels of 24-28 and 84-87 seem to be completely dead on both sides.

Maybe it's different in your area. Maybe it's different somewhere else in the world, but from what I've seen, the only channels worth monitoring are the 156.6 through 157.425 sets.

The "shore" reference was for HF channels. More than half the ITU marine HF channels are two-frequency simplex.

 

[ecps92]

In many areas, the Duplex channels have been converted to Repeaters for multiple purposes.

Boston Pilots have a Repeater on Ch.20
Seatow Boston is licensed for a Repeater on one of the Marine channels as an Automated Radio Check system, there are others as well in various ports.

How many years has it been since you heard someone on the "shore" freq?
The VHF marine operators have pretty much been replaced by cellphones in most areas, at least in the SE Massachusetts area.

So everyone is only using the simplex or "A" channels in the 156.25 through 157.425 MHz range. The 161 MHz channels don't seem to be active, except for AIS and DSC data.

The marine operator channels of 24-28 and 84-87 seem to be completely dead on both sides.

Maybe it's different in your area. Maybe it's different somewhere else in the world, but from what I've seen, the only channels worth monitoring are the 156.6 through 157.425 sets.