Re: [digitalradio] VHF / UHF Digital Beyond line-of-sight

Hi Tony, Thanks for making the recording of aircraft reflections. Yes, we also see and hear aircraft reflections mixed with atmospheric disturbances all the time. The aircraft reflections sound similar to what you hear on the beacon, and you can identify those because they vary in frequency

Re: [digitalradio] Multipsk

Hello John, You must normally start the Instal.exe to instal Multipsk (which will create and fill the Maps sub-directory). You can also copy the Multipsk Maps sub-directory from another Multipsk implantation. 73 Patrick - Original Message - From: jgmags2000 jgmags2...@yahoo.com To:

Re: [digitalradio] 3rd Generation Digital radio

I'd say the 3rd generation has been available for several years now. Both Kenwood and ICOM manufacture VHF and UHF mobiles, handhelds and repeaters for the new standard. The key advantage is its spectrum efficiency. It supports both voice and data but uses 6.25 kHz channel spacing. D-STAR

[digitalradio] Re: 3rd Generation Digital radio

I think you missed a generation or two. First generation - CW (binary states plus time) Second generation - RTTY and FAX Third generation - AX.25 packet Fourth generation - what the OP called the first generation etc... 73 de Dave, NF2G

Re: [digitalradio] VHF / UHF Digital Beyond line-of-sight

On Tue, Apr 20, 2010 at 03:32:18AM -0400, KH6TY wrote: Hi Tony, Thanks for making the recording of aircraft reflections. Yes, we also see and hear aircraft reflections mixed with atmospheric disturbances all the time. The aircraft reflections sound similar to what you hear on the beacon,

Re: [digitalradio] 3rd Generation Digital radio

I can't think back this far. What came first - Packer or Amtor (ARQ mode to boot) . At 12:03 PM 4/19/2010, you wrote: If the first generation of digital was PACKET-IRLQ-Echolink-APRS (generation Zero was CW and RTTY), then the second generation was D-Star. D-Star brought everything together

[digitalradio] Re: 3rd Generation Digital radio

A perhaps narrow outsider's opinion: There is potential here for both good and for wreaking havoc with fellow users of VHF/UHF amateur bands given a paradigm shift into a G3 digital era. Improving upon packet's abilities could be a very good thing- particularly for those involved in EmComm. But

Re: [digitalradio] 3rd Generation Digital radio

--- On Tue, 20/4/10, John Becker, WØJAB w0...@big-river.net wrote: I can't think back this far. What came first - Packer or Amtor  (ARQ mode to boot) . Good question Amtor was developed by G3PLX circa 1979/1980. The first issue of the TAPR Packet Status Report newsletter was July 1982,

[digitalradio] LOTW/SKCC and other Sked Page use. March Report

A reminder that the K3UK Sked Page supports interactive dialog facilitating skeds and other general fun. The pages can be found at http://www.obriensweb.com/sked/ Specific pages for the Straight Key Century Club and the LOTW Triple Play are very popular. There are also pages for digital mode

[digitalradio] Re: 3rd Generation Digital radio

That was why someone suggested that 220 be looked at rather than 440. Both 2m and 440 have heavy usage with analog repeaters plus SSB/CW (and satellite). Thus 220, or 900 Mhz, would be far better for a third generation digital (trunked) network. After all it is going to mean a new radio

[digitalradio] 4M200AJ [2 Attachments]

QSO,, con la 4M2OOAJ en MFSK 16 modalidad ROS ,banda de 40 Metros ,Frecuencia 7.050.00 Khz 30 wts tx. antenna Windom Short ,en commemoracion del Bicentenario de la Independencia de Venezuela ,Special Call 73 Francesco YV4GJN