Hi Glen and all, You wrote:
> 20m wont cover the whole country.... you'll need about 5 frequencies, at > least 2 simulatenous at all times, maybe 3.... > And how many VHF repeaters do we have in our country, perhaps 300. Thanks for the magic diagrams, it shows that if Wyalla wants to talk to Adelaide, with the equipment they have, HF only, then there is a path via a repeater, if it were a skip distance away. Does this make sense? I aim to (well one is running now) start the process of giving this a try. So, I'm asking, what frequencies would you suggest? The Codan to be used will do 2 to 14MHz USB or LSB. (there are more Codans available) 80 (not 73, the 80 is a problem solver, have AC, need DC) Alan VK2ZIW On Wed, 30 Jan 2019 18:06:09 +1100, glen english wrote > But ALan'you dont actually need a repeater on HF... therepeater is already up > there- it's called the Ionosphere !!! :-)What would be more useful, would be > say an HF gateway onto alocal repeater etc. > 20m wont cover the whole country.... you'll need about 5frequencies, at least > 2 simulatenous at all times, maybe 3.... > > 20m might get you 5% of the country for 4 hours per day right now > > here you go .. > see below : > likely coverage at 9 in the morning, a guide... there are a fewassumptions > due to the variability of station/terminals. > > coverage at 5pm : > > coverage on only 20m at noon. > > On 30/01/2019 5:40 PM, glen englishwrote: > SoAlan > > didnt get a reply to my last cavity question on our separatethread. any > questions ? > > The MUF is about 5 MHz max right now, what are you expecting ? > > On 30/01/2019 5:29 PM, Alan Beard wrote: > Hi David, Glen and Jeroen, > > 10m, the RF side concerns me, the ionosphere is just notco-operating. > > The MUF is not lifting up there so the coverage area isn't thatgood. > > Hence my concentrating on 20m as a max frequency. Using 20m awhole > country can be covered. And it happens often enough, even dailyfor hours. > > Thanks Jeroen for the networking thoughts, as Full Duplex fromone site > on HF is realistically not possible. > > (I've looked at cavity designs for 100KHz split on 29MHz and youneed about > four cubic metres!!) > > As mentioned, I've picked up the Codan 8528 for a Codec2repeater. > > Playing some more with the Hybrid Ring: > http://www.unixservice.com.au/hamradio/repeaters/duplexers/hybridRing/dup6mHR. > html > > Alan VK2ZIW > > Evil flourishes when good men do nothing. > Consider the Christmas child. > --------------------------------------------------------------------------- > Alan Beard Unix Support Technician from 1984 totoday > 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO,MIPS > Emu Heights N.S.W. 2750 Routers, terminal servers, printers,terminals etc.. > +61 2 47353013 (h) Support Programming, shell scripting,"C", assembler > 0414 353013 (mobile) After uni, electronics tech > > _______________________________________________ > 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 > > Alan Evil flourishes when good men do nothing. Consider the Christmas child. --------------------------------------------------------------------------- Alan Beard Unix Support Technician from 1984 to today 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc.. +61 2 47353013 (h) Support Programming, shell scripting, "C", assembler 0414 353013 (mobile) After uni, electronics tech
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