Actually, the Hardrock-50 is capable of 50 watts, so we're about 80% of the way to full power. It might be interesting to see what the MFJ magloop's control box's wattmeter says, though, as FreeDV has generally caused it to show 30 watts when the radio's set to 100 watts.
-Mooneer K6AQ On Sat, Dec 19, 2020 at 8:54 PM David Rowe <[email protected]> wrote: > If it's 100W PEP then 40WRMS is about right with the > tools-options-clipping on (4dB PAPR). > On 20/12/20 3:19 pm, Mooneer Salem wrote: > > On my Hermes Lite 2 + Hardrock-50, the latter was claiming 40 watts on > 700E without touching any settings in the app. Will need to play more to > see how far it can be taken. > > -Mooneer K6AQ > > On Sat, Dec 19, 2020 at 7:22 PM David Rowe <[email protected]> wrote: > >> Thanks Walter and Mooneer. I'd be interested to know the RMS power you >> can develop with 700D/E with the clipper option. >> >> - David >> On 20/12/20 10:30 am, Mooneer Salem wrote: >> >> Looks like it's working reasonably well, though the 20 meter band fell >> out shortly after we all got it installed. More testing tomorrow for sure. >> :) >> >> -Mooneer K6AQ >> >> On Sat, Dec 19, 2020 at 2:26 PM <[email protected]> wrote: >> >>> Have it loaded and running now. >>> >>> Working on a couple others as I type to get some end to end testing. >>> >>> Many thanks David, and best of the holidays. >>> >>> >>> Walter/K5WH >>> >>> -----Original Message----- >>> From: David Rowe <[email protected]> >>> Sent: Saturday, December 19, 2020 3:34 PM >>> To: [email protected] >>> Subject: [Freetel-codec2] FreeDV 1.5 - 700E and OFDM compression >>> >>> I've been working on a new FreeDV 700E mode, and some compression for >>> FreeDV 700D and 700E to increase the average power. A Christmas present >>> for you to play with >>> >>> 700E is designed to handle fast fading like 700C, but like 700D has >>> powerful FEC. My bench tests indicate 700C & E are equivalent on moderate >>> fading channels (2Hz dopdler/2ms spread), but on very fast fading (4Hz/4ms) >>> 700E does better - 700C & D fall over. 700D works better at lower SNRs on >>> slow fading channels. >>> >>> I've also been testing against compressed SSB, which as Helmut suggests >>> is pretty hard to beat, as it's so robust to fading. However 700E is >>> hanging on quite well with fast fading, and becomes noise free as the SNR >>> increases. >>> >>> -/- >>> >>> The second innovation is compression of the 700C/D/E waveforms, to >>> increase average power significantly. >>> >>> Please be careful adjusting the Tx drive and especially enabling the >>> Tool - Options - Clipping. It can drive your PA quite hard. I have managed >>> 40W RMS out of my 75W PEP transmitter. Make sure your transmitter can >>> handle long periods of high average power. My IC7200 and >>> FT-817 seem OK. >>> >>> At the same equivalent peak power - 700D is doing well when compressed >>> SSB is -5dB SNR and rather hard on the ears. >>> >>> -/- >>> >>> Peter VK3RV, Jose LU5DKI, and Barry VK3BRT tried 1.5.0 last night and >>> report it works on real HF channels. >>> The latest manual describes the new features: >>> >>> >>> https://github.com/drowe67/freedv-gui/blob/118cb66ee4679518185db871ec0ae68071c406a4/USER_MANUAL.md >>> >>> >>> You can download Windows 32 and 64 bit versions of FreeDV 1.5 here: >>> >>> http://rowetel.com/downloads/freedv >>> >>> -/- >>> >>> I'd be interested in any feedback. If you have an interesting test case >>> (e.g. a bug or comparing SSB to FreeDV), pls send me off air recordings of >>> signals (FreeDV Tools-Record File from Radio). That helps me make objective >>> comparisons. Recordings are much more useful to me than anecdotes or >>> subjective reports. >>> >>> Thanks, >>> David >>> >>> >>> _______________________________________________ >>> Freetel-codec2 mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>> >>> >>> >>> _______________________________________________ >>> Freetel-codec2 mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>> >> >> >> _______________________________________________ >> Freetel-codec2 mailing >> [email protected]https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> >> _______________________________________________ >> Freetel-codec2 mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > > _______________________________________________ > Freetel-codec2 mailing > [email protected]https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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