I would like to hear of the results from those who are able to try these modems. I wish I could find someone who would operate 6 meter digital but have never been able to do so, even though I have promoted this for years here in Wisconsin.
It has been very disappointing to me that even though we made the licenses easier to get, the new hams really don't use their license capabilities even thought we have low cost multiband/multimode equipment that easily lets them do it. One of the main problems with these high speed modems is that I doubt that they will even work into zero db S/N ratio, but the only way to know is try them out. We already know how incredibly well SCAMP worked, but you had to have a good signal of around 10 db, or no throughput. Once you hit that that point though, it would just scream on HF. So having an adaptable modem for HF is something that some genius ham will eventually do. Have any of you folks compared the MIL-STD 188 modem to the existing popular image/FAX modes? What kind of performance differences have you seen? 73, Rick, KV9U expeditionradio wrote: > >Hi Rick, > >You can easily download PCALE and try the MIL-STD 188-110 modem in it >for comparison against packet. > >http://hflink.com > >I have used it, and it works... I've sent photos with it in the USA HF >phone bands. > >The MIL-STD 188-110 modem is built into PCALE. >The FS-1052 settings are adjustable for various data rates from 75 to >2400, with long or short interleave. > >You will need 3kHz audio bandwidth, so if you have one of the newer >DSP-IF transceivers, such as IC-756pro, you can select the wider >transmit and receive bandwith, and that is sufficient. > >There are also 2 other software modems that are non-standard 188-110, >good for the more narrow bandwidth of ham transceivers (~2.7kHz). >One of those is the RFSM "2400" modem by IDE Group and the other one >is built into MARS-ALE (but only available to MARS members). > >The format of the RFSM 2400 modem data does not seem to be compatible >with the 110 modem in PCALE presently. > >Bonnie VR2/KQ6XA > > > > > >Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org > > >Yahoo! Groups Links > > > > > > > >
