I use Olivia occasionally to remain somewhat proficient with that mode. Digital is a good method of passing information or emergency comms in poor conditions. MY favorite mode for talking to another ham is SSB which to me is “personal”, the voice is the fascinating part of talking to another person in a far away or unusual place. I started out in the 70’s with AM,SSB,CW,RTTY,PK232, SSTV, etc. The FLDigi Manual of Operation is found here: įor additional information on Olivia, check out: That would translate to the 14.0729 CENTER frequency. If your software is set to show OFFSET, then you might, for example, set your radio’s dial frequency to 14.0714, and place the center of your waterfall cursor to 1500 (1500 Hz). If your software’s waterfall shows the frequency, then you simply place the cursor so that its center is right on the center frequency listed, above. The cursor is what you use to set the transceiver’s frequency on the waterfall. Q: What’s a ‘CENTER’ Frequency? Is That Where I Set My Radio’s Dial?įor those new to waterfalls: the CENTER frequency is the CENTER of the cursor shown by common software. (Why the …9 frequencies? Experts say that ending in a non-zero, odd number is easier to remember!) See the pattern?īy the way: The current suggested CENTER frequency With 16/1000 or 32/1000 on 20 meters is 14.1059. In this video, contributing editor with CQ Amateur Radio Magazine, NW7US shares some starting points in the FLDigi software for Olivia keyboard-to-keyboard chat mode.Ĭurrent CENTER Frequencies With 8/250 in MHz:ġ.8269, 3.5729, 7.0729, 10.1429, 14.0729, 18.1029, 21.0729, 24.9229, 28.1229, and so on. When you desire to get to know people from other areas of the world, or if you need to establish networks around the world for passing information–perhaps an emergency net in support of the Red Cross–or if you are motivated by any other of a myriad reasons to establish a keyboard-to-keyboard conversation by way of the ionosphere, modes like Olivia are great candidates for your consideration. They cannot handle any additional communications beyond a callsign, a signal report, a grid square, and a very limited set of acknowledgments and sign-off messages. While making quick work of getting DX stations into your logbook by exchanging callsigns, a signal report, and a grid square, the JT/FT modes (JT stands for Joe Taylor, the fellow that pioneered these modes) are limited. (The meaning of QSO on Wikipedia: An amateur radio contact, more commonly referred to as simply a “contact”, is an exchange of information between two amateur radio stations.) Unlike the JT/FT digital modes–modes that do an incredible job under marginal propagation conditions–there are other modes that offer keyboard-to-keyboard conversational QSO opportunities that can overcome rough shortwave radio propagation conditions. Demonstration: Using FLDigi to Communicate with Olivia Digital Mode on Shortwave FEC of previous mode too heavy for some CPUs Requires Signalink made-after 2018 connected to the 9600-jack 2/3 rate K=13 FEC with 3.2sec interleaver 1/2 rate K=13 FEC with 3.2sec interleaver 1/2 rate K=15 FEC with 4sec interleaver * fix for pi3/4 gpio h/w UDRC-II operation * modify edit code to maintain cursor position * correction to xmlrpc procedure to get smeter and power out meter from flrig This seems to result in slightly better message decoding in marginal Make the bit flip guessing a little smarter by correcting towards theģ/4 framing, but only if this character is only one off from a valid The space value, even when both are the exact same signal level! The mark value consistently getting a lower envelope estimation than SITOR-B, where every character has 3 marks and 4 spaces, resulting in However, in the face of selective fading and QRM, the assumption of With the smallest absolute value is likely to get us what might have been Likely to get things wrong in each direction, and that flipping the bit The flip_smallest_bit code was written with the assumption that theĭiscriminator has equal weights for mark and space, that we are equally * make single bit flip correction guess a little smarter * adjust tracking filter constants to improve power detection * Fix cosmetic issues reported by Bob, VK2YQA * Update release to both fldigi and flarq 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 v4.1.20.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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