Re: [digitalradio] Re: Calling all experimenters ( A Proposal)

[Les Keppie]

Hi All Below is the current VK Bandplan  for 20m - There have been changes to this lately in regard to permitted bandwidths - see below under heading Item Frequency band Permitted emission modes but the basic bandplan still applies The reason why VK amateurs stop above 14100  for wideband digital - 1khz plus modes should be obvious 20 Metres 14.000 - 14.350 CW 14.070 - 14.112 Digital Modes (Note 2) 14.070 - 14.080 Amtor, PSK etc. 14.080 - 14.095 RTTY 14.095 - 14.112 Packet Radio 14.100 IBP Beacons (Note 3) 14.112 - 14.350 SSB 14.125 WICEN frequency 14.230 SSTV calling frequency (Note 2) 14.250 FAX calling frequency (Note 2) Note 2: Modes "Digital Modes" includes all modes such as RTTY, packet and Amtor, using FSK or PSK and with bandwidths up to 1.12 kHz. The SSB segment can also be used for image transmission modes such as SSTV or Fax, using bandwidths up to 4 kHz. On 10 metres, the recommended segment for AM is 29.0 - 29.1 MHz. Item Frequency band Permitted emission modes 1 3.500 MHz–3.700 MHz 7.000 MHz–7.300 MHz 14.000 MHz–14.350 MHz 21.000 MHz–21.450 MHz 2 28.000 MHz–29.700 MHz 52.000 MHz–54.000 MHz 144.000 MHz–148.000 MHz 430.000 MHz–450.000 MHz 1 240.000 MHz–1 300.000 MHz 2 400.000 MHz–2 450.000 MHz 5.650 GHz–5.850 GHz Any emission mode with a necessary bandwidth not exceeding 8 kHz     -   This restriction for HF Section ------------------------------------------------------------------------- Any emission mode with a necessary bandwidth not exceeding 16 kHz   -   This restriction for FM Les VK2DSG dshults wrote: If you are speaking of semi-automatic stations, that's correct. They too are authorized to operate where you mentioned as long as the bandwidth is <500 Hz. The last known "rouge" automatic pactor station that I know of (in the mid west) shut down about a year ago. Again I ask, why is that narrow sub band selected? Is it preferred because that is the only band section authorized for fully automatic stations on 20 meters? If my math is correct, this section (excluding 1,000Hz at 14.100) is only 10.6% of the entire RTTY/Data sub band. ... Duane N7QDN --- In digitalradio@yahoogroups.com, "Joe Ivey" <[EMAIL PROTECTED]> wrote: I guess because they are legal to operate there and the same reasons the automatic station operate in the RTTY and even below sub bands. Joe W4JSI ----- Original Message ----- From: dshults To: digitalradio@yahoogroups.com Sent: Tuesday, December 06, 2005 8:50 PM Subject: [digitalradio] Re: Calling all experimenters ( A Proposal) Can someone please explain to me why manually operated digital experimenting takes place within the narrow 20 meter sub band where automatic forwarding systems are specifically limited to occupy? Is the rest of the digital band closed to these modes for some reason? Whether USB or LSB, the modulation still falls there. If Olivia and Contestia operate under full automatic control (the originating station) I can understand, but I don't believe this is the case. ... Duane N7QDN --- In digitalradio@yahoogroups.com, "palmdalesteve" <[EMAIL PROTECTED]> wrote: > > Calling all experimenters ( A Proposal) > > I'd like to propose a few experiments on HF to see how well Olivia and > Contestia stack up. I'm looking for West Coast to Mid West stations to > participate, as the propagation has been pretty bad at night to try > this experiment to the East Coast. If someone on the East Coast > wishes to try the same experiment, that would be great. Results, > comments and suggestions can be posted under this thread. > > Here's the plan: > > Pick a time and band at an agreed to time for QSO's in various Olivia > mode, report signal and see how it all stacks up. Of course this is > all depending on propagation cooperation, which now days is not a sure > thing. I think we can coordinate this experiment to allow for bands > being open and try to run it during the day or in the evenings, most > likely on 40 meters. Daytime would probably work best on 20 meters, > 14.107 or 14.108. > > Here's the outline of the plan. Please feel free to edit and comment. > > 1 Pick a frequency and operating mode for the start of the test. > 2 Something like 7.090 04:00 Z. Olivia 1000/32 tone mode. Power > should be something like 30 to 40 watts maximum. What ever the power > is, let others know what is you are running for power. > 3 Establish contacts and or check in of stations able to copy. > 4 Exchange signal reports using the MixW Olivia DLL standard tool. > 5 The suggested exchange in a Macro would have: > <GET SN> <GET OFFSET> <GET RATE> > 6 Take check ins for stations who are receiving the signal, but who > did not establish the QSO. Reports would be welcome. > 7 Reduce power in 5 Watt steps down to 5 Watts, move power back up to > starting point, pausing at each step for stations monitoring to > record the signal using the Macro each step. I would suggest repeating > the step down and up from both ends of the QSO. > 8 Take received reports from stations who are listiting mode. > 9 Change to Olivia Mode 500/16, then 500/8 and finally 500/4 > repeating the power step down. > 10 Change to Contestia Mode and repeat. The automated SN and other > features does not work in the DLL I have, so the reading will have to > be only on number of errors in text. If anyone can get the signal > reporting to work, clue me in. > > For test text, here's an old test we used to use in the military > > DE N6CRR @ x Watts > The quick brown fox jumps over the fence. 1 2 3 4 5 6 7 8 9 10 > > DE N6CRR @ x Watts > The quick brown fox jumps over the fence. 1 2 3 4 5 6 7 8 9 10 > > etc etc > > So anyone want to "play"? > > N6CRR/Steve > Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html ------------------------------------------------------------------- ----------- YAHOO! GROUPS LINKS a.. Visit your group "digitalradio" on the web. b.. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. ------------------------------------------------------------------- ----------- ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Need a Digital mode QSO? Connect to   telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software?  Check the quick commerical free link below http://www.obriensweb.com/digimodes.html SPONSORED LINKS Craft hobby Hobby and craft supply Ham radio YAHOO! GROUPS LINKS  Visit your group "digitalradio" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.