Conditions on HF can be very difficult, with signals fading in and out, atmospheric noise, and other problems. The transmissions will also help you to be sure that your station is working as expected and if not, give you a chance to reset things.Ĭalling the net is straighforward but remember that this is not a local VHF net supported by repeaters. You'll have to use voice on 75m or digital on 80m. You can make the transmission in both voice and digital on 60m. Substitute your callsign in the right place, and the amount of time before the net. Voice: THIS IS - (CALLIGN) - NET IN 5 MINUTES - OUTĭigital (Make sure TxID is enabled): DE (CALLSIGN) NET IN 5 MINUTES AR For example at 5 minutes, you might announce: It's everyone's job to avoid interference.Īnnounce the net's start before the net at the top of the minute. Remember that nets do not get priority over other operations in amateur spectrum. You might have to go to a secondary or tertiary channel, or might even need to go to 80m and control by digital because there's no free operating space. In the evening, 75m might be very crowded even though that's where signals are best. After you choose the band go through the channels on the SOI (as well as the channels on another band should you have to switch bands at some point) to see if there are other stations operating. Your observation of conditions will tell you if you've got a typical day ahead or not. Choose the band that's appropriate for the time of day: the 1300 session is typically 60m, while other sessions are typically 75m. Changes to the SOI are published from time to time, so be sure that you've got the most recent, and that you have the corresponding FLDIGI macro package. Also, if you've got Internet access, you can check NOAA's Space Weather Prediction Center Radio Communications Dashboard to get more information about conditions like predicted and ongoing geomagnetic storms, radio blackouts, and so on.īe sure that you have the current Signal Operating Instructions (SOI). Granted, WWV in Colorado is outside of our normal operating range but you'll start to notice correlations about signal quality for the WWV station and which stations you can hear locally. Our 60m operation isn't far off from the 5.0 MHz WWV broadcast, and our 75-80m operation is somewhere between the 2.5 and 5.0 MHz broadcasts. Over time you will get an understanding of how signals are working at different times of day and different times of the year. When checking WWV to get your clock synchronized, try different frequencies for the station to see which comes in the best and make a note of which works the best, as well as the time of day and of course the date. Use WWV to be sure that your local clock is accurate and that when net time comes, you're ready to go. Get to the shack early, give yourself to get settled in and to get a clear picture of what's happening and be sure you have everything that you need. Don't get to the radio shack two minutes before the net and think that you've got plenty of time. Download the latest version of Fldigi here. As with all of the FL suite, Flrig supports PowerPC, Intel (i386) and Apple Silicon (M1) processors with individual downloads available for each architecture. It can help calibrate a sound card to a time signal and do frequency measurement tests. The development team led by W1HKJ have announced the release of Fldigi v4.1.23.įldigi is a modem program for most of the digital modes used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb are all supported.
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