split frequency

” Working Split ” – ” Split Working ” – ” Split Frequency Operation ”

** Hairy Paul’s Handy Notes for HamSphere 4 operators **

- ” Working Split ” – ” Split Working ” – ” Split Frequency Operation ” -

To make it a little easier to work Split-Frequency operations I added a second VFO Frequency display to my transceiver and selected Receive on one frequency display and Transmit on the second one. This makes it nice and easy to see exactly what frequencies you have selected for Rx and Tx.. Of course this can also be done on the standard transceiver with one single frequency display.. If you look at the Band Scope (or waterfall display) you will see the Transmit and Receive frequencies are marked with separate vertical lines, One is Green (the RX frequency) and one is Red (the Transmit frequency) — [Note: the Waterfall also shows the same Green and Red lines for Rx and Tx frequencies]

Image below is one of my HamSphere 4 transceivers set up for Split Frequency working with Dual LCD frequency displays. As you can see in the image I am receiving the DX station on 18.150 and have selected 18.155 as a clear frequency to transmit on — (You do not ‘Need’ to have multiple LCD frequency displays and can easily operate split with the standard HS4 transceiver but I prefer to have two LCD frequency displays so I can see my RX and TX frequencies at the same time)

split-working on HamSphere 4.0

split-working on HamSphere 4.0

- Easy way to work Split on HamSphere 4.0 transceiver -

You select the small [R] button near the bottom left of either the band scope or waterfall and then click on the band scope (or waterfall) to set the frequency you want to receive on. (where you are hearing the DX station)
Then you click on the small [T] button on the band scope (or waterfall) and click on the frequency you want to transmit on. (where the DX station has said he is listening) — If the DX station says ‘Listening UP’ this means that he will look at/listen to frequencies ABOVE the frequency you can hear him transmitting on. He is expecting stations to find a Clear frequency ABOVE his TX frequency and transmit Only their call sign.. He will watch for signals above his TX frequency, select a station that he can hear clearly and call them in to make contact.

Split Frequency operation can be a very effective way of operating in a pile up situation. By using the option of ‘Listening UP’ the DX station is spreading out the pile up of stations calling him to make it easier for him to hear the stations calling — The MOST IMPORTANT THING is that YOU MUST LISTEN TO THE DX STATION so you know what frequency the DX station is listening on and if he says ‘Listening UP’ you should find a clear frequency UP and transmit your call sign there so the DX operator can pick out your call.

The frequency the DX station is LISTENING ON will be YOUR TRANSMIT FREQUENCY.. and of course Your RX frequency will be the one you can hear the DX station on…

- NOTE #1: When a station is working SPLIT, He CAN NOT HEAR anyone calling him on the frequency he is Transmitting on, so calling on the same frequency you hear the DX station on will only cause QRM and stop anyone from being able to hear the DX station which ruins it for everyone.

- NOTE #2: When returning to any CQ or QRZ call from any station It helps greatly if you ONLY SAY YOUR CALL SIGN ONCE when calling AND NOTHING MORE — Long drawn out calls just cause unwanted QRM and make it much harder for the DX station to pick out call signs – operators who give their call more than once and those who give callsign, name, location etc are just being inconsiderate to everyone else and making it harder for everyone including the DX station to make contact -
I Hope this helps more operators understand what Split-Frequency Working is and How to use your HamSphere 4 transceiver to operate with Split-Frequencies —

73 de Hairy Paul 108hs5625