DIGITAL TRANSMISSION OF GRAPHIC FILES OVER AMATEUR RADIO FREQUENCIES
SUBJECT FOR THIS ESSAY IS A DRM (DIGITAL RADIO MONDIALE) PROGRM CALLED EASYPAL. EASYPAL IS A PROGRAM FOR RECEIVING AND TRANSMITTING DIGITAL FILES, SUCH AS GRAPHIC FILES OR TEXT FILES, OVER THE AMATEUR RADIO FREQUENCIES. BOTH TRANSMITTING AND RECEIVING STATIONS HAVE TO BE RUNNING THE SOFTWARE ON THEIR RESPECTIVE COMPUTERS. EACH STATION CONNECTS THEIR TRANSCEIVERS VIA THE SOUND CARD TO THEIR RESPECTIVE COMPUTERS. A SIMPLE INTERFACE IS ALL IT TAKES TO ACCOMPLISH THIS CONNECTION. THEY ARE AVAILABLE FROM, AMONG MANY OTHERS, BUXCOMM.COM http://www.packetradio.com/catalog/index.php?main_page=index&cPath=2&zenid=g03537h8ufl1jlb0qi3tgphu85 .
THE DEVICE ISOLATES THE TRANSCEIVER FROM THE COMPUTER VIA ELECTRONICS WHILE ALLOWING THE AUDIO (BOTH TRANSMIT AND RECEIVE) TO PASS THRU. THE DEVICE ALSO ALLOWS THE COMPUTER AND SOFTWARE TO KEY THE TRANSMITTER SO AS TO SEND GRAPHIC FILES.
JUST TO TRY THE PROGRAM WITHOUT SPENDING ANY MONEY, SIMPLY DOWNLOAD THE EASYPAL PROGRAM (BY THE WAY IT’S FREE). AFTER SETING UP THE PROGRAM, CONNECT A MICROPHONE TO YOUR COMPUTER AND PLACE IT IN FRONT OF YOUR TRANSCEIVER SPEAKER. THEN TUNE YOUR TRANSCEIVER (OR RECEIVER FOR THAT MATTER) TO ONE OF THE PRESCRIBED DIGITAL FREQUENCIES ON THE BAND THAT HAPPENS TO BE WORKING BEST AT THE TIME OF DAY YOU ARE WORKING THE PROGRAM. THIS SIMPLE SETUP WILL ALLOW YOU TO RECEIVE ONLY. TO SEND YOU SHOULD USE AN INTERFACE AS DESCRIBED ABOVE.
AN EXTENSIVE LIST IS INCLUDED BELOW, BUT FOR DAYTIME TRY 7.173 MHZ OR 14.233 MHZ AND AT NIGHT 3.713 MHZ (THIS FREQUENCY IS A LITTLE RESQUE AT TIMES) OR 1.950 MHZ.
DOWNLOAD THE EASYPAL PROGRAM AT http://www.kc1cs.com/ . IT’S PRETTY EASY TO SETUP.
SINCE THE PHOTO FILES ARE DIGITAL WHEN YOU RECEIVE THEM THROUGH THE AIR VIA YOUR TRANSCEIVER AND THE ACCOMPANYING EASYPAL SOFTWARE, THE QUALITY IS FANTASTIC. IF YOU FAIL TO RECEIVE THE PHOTO FILE, THE PROGRAM HAS THE ABILITY TO ASK FOR A REPAIR AND CAN SEND A REQUEST FOR ONLY THE MISSING SEGMENTS OF THE PHOTO FILE TO THE TRANSMITTING STATION OR TO ANY OTHER STATION THAT RECEIVED THE COMPLETE PHOTO FILE. THEN THE ORIGINAL OR OTHER STATION CAN TRANSMIT ONLY THE PORTIONS NEEDED TO FILL YOUR REQUEST FOR MISSING SEGMENTS. IT’S PRETTY SLICK. THE GRAPHICS ARE HD QUALITY.
SAMPLES OF THE GRAPHIC FILES CAN BE SEEN AT: http://www.qsl.net/wy3w/3938/easypal.html .
IN ADDITION TO GRAPHICS, THE PROGRAM CAN SEND A TEXT MESSAGE (LIKE AN EMAIL MESSAGE) OUT AND THE RECEIVING STATION GETS IT INSTANTLY. (NO DELAY AS IN EMAILS)
THE FREQUENCIES PRESCRIBED ARE:
Digital File Nets & Frequencies
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updated 2/18/2011
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70 cm (FM)
Friday 9 pm PT 441.950 MHz CA San Jose 100.0 PL
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2 meters: (FM)
Every day 145.555 MHz TX Temple
Every day 145.650 MHz DOMINICAN REPUBLIC HI8LAM
Every day 145.625 MHz AUSTRALIA Gympie - DSTV Repeater uses EasyPal
Every day 144.650 MHz UK East Midlands
Every day 6:30 am ET 144.340 MHz IN W9NTP
Every day 6 pm ET 145.470 MHz IN Vevay Digital DSTV RPTR NG9Y Bob
Every day 7:30 pm UK 145.300 MHz UK CHESTERFIELD G4PBC John
Every day 7:30 pm ET 146.475 MHz IN Indianapolis (ECHOLINK AFTER 8 pm)
Every day 8 pm CT 145.100 MHz IL Peoria
Every day 8:30 pm ET 146.580 MHz VA SHACKLEFORDS - KE4EX GARY
Every day 9 pm ET 145.520 MHz TN BRISTOL W3YAE MARVIN
Every day 9 pm CT 147.240 MHz TX Waco RPTR W5NCD Larry Sun-Thr.
Sunday 11 am ET 144.270 MHz ON ESPANOLA - VE3YYL LARRY
Sunday 7 pm ET 145.390 MHz MI Lansing RPTR 100 PL K8YHH CARL
Sunday 7 pm CT 146.940 MHz MI Lansing RPTR
Sunday 8 pm CT 146.970 MHz IL Peoria RPTR 103.5 PL
Sunday 9:30 pm PT 146.790 MHz IN Anderson RPTR W9CSY Chuck
M/W/F 8 am ET 144.955 MHz IN Indianapolis N9AMR Tom
Monday 8 pm CT 145.550 MHz IL Chicago WA9MNF Ed
Monday 9 pm 146.700 MHz AUSTRALIA Melbourne VK3RML RPTR
Tuesday 8 pm CT 145.550 MHz IL Chicago WA9MNF Ed
Tuesday 9 pm ET 144.500 MHz ON Niagara VE3BHH Bob
Wednesday 8 pm CT 146.550 MHz IL Springfield K7CZ Bill
Wednesday 10 pm ET 144.175 MHz MI GREAT LAKES DSSTV NET (USB)
Tu/Th 8 pm CT 144.150 MHz MS Coldwater K8FA Art
Thursday 7 pm CT 144.340 MHz IL Chicago (144.36)
Thursday 8 pm 145.275 MHz UK Nottingham G4ROB Rob
Thursday 8 pm 145.300 MHz UK Nottingham G4ROB Rob
Thursday 8 pm ET 146.490 MHz IN Bedford KB4YZ Dave
Thursday 9 pm 146.700 MHz AUSTRALIA Melbourne VK3RML RPTR
Friday 8 pm ET 147.240 MHz PA LEBANON - K3BFD RPTR
Friday 8 pm CT 146.550 MHz IL Springfield K7CZ Bill
Friday 9 pm PT 147.300 MHz CA San Mateo 100.0 PL
Fri/Sat 8 pm CT 146.850 MHz MS Collierville WA4KOG RPTR
Saturday 7:30 pm ET 147.150 MHz NY Fulton (KW2M RPTR)
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6 meters: (USB)
"MAGIC BAND"
Every day ? pm 50.680 MHz WI N0EDV
Every day 6:30 pm ET 51.250 MHz IN Central & Northern
Every day 8 pm CT 52.525 MHz IL Peoria
Every day 7:30 pm ET 50.325 MHz GA - KR4I Roger
Friday 7 pm CT 50.680 MHz MN Duluth - K0KP REX
F/S/S 50.130 MHz NC Gastonia K3ASI
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10 meters: (USB)
Friday 7:30 pm ET 28.475 MHz PA New Oxford - N3IZ
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15 meters: (USB)
Every day 21.370 MHz
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17 meters: (USB)
Every day 13:00 UTC 18.1625 MHz TX Waco W5NCD Larry
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20 meters: (USB)
Every day 14.233 MHz 20 Meter Band Digital DSTV Call Freq.
Every day 16:00 UTC 14.236 MHz also Digital Voice
Every day 14.240 MHz Australia/Europe
Weekdays 13:00 UTC 14.227 MHz TX W5NCD Larry/K4AWB Bob
Tuesday 18:00 UTC 14.236 MHz CO Denver W0LMD Robert
* * * * * * * * *
40 meters: (LSB)
Every day 7183 KHz Australia
Every day 7183 KHz US
Every day 7120 KHz JAPAN
Every day all day 7173 KHz Eastern US - KB4YZ Dave
Every day 10 am ET 7228 KHz Eastern US
Sunday 10 am CT 7153 KHz TX W5FJS Wayne
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75/80 meters: (LSB)
Every day 3637 KHz Australia
Every day 3643 KHz Australia
Every day 3733 KHz Europe
Every day 3736 KHz UK
Every day 7 am ET 3857 KHz Eastern US KC3AF Skip
Every day 8 am CT 3872 KHz Midwest US N9CQH Lex
Every day 10 am ET 3860 KHz Eastern US
Every day noon ET 3704 KHz Eastern Canada
Every day 7:30 pm ET 3720 KHz Eastern Canada
Every day 9 pm ET 3813 KHz US
Every day 9 pm ET 3713 KHz US
Every day 9 pm ET 3606 KHz US
Every day 9 pm ET 3927 KHz US
Weekdays 3:30 pm CT 3847 KHz TX W5FJS Wayne
Saturday 7 am CT 3855 KHz MN W0WVO Jerry
Sunday 8:30 am CT 3763 KHz IL WA9YZM
Sunday 3 pm AT 3724 KHz Eastern Canada
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160 meters: (LSB)
Every day 7:30 pm ET 1898 KHz Eastern/Midwest US
Every day 5:00 pm ET 1950 KHz Eastern US N4RAN RANDY
Tu+Th 7:30 pm CT 1884 KHz TX W5FJS Wayne
Please notify Dave - KB4YZ of updates and corrections: [email protected]
Updated list is available at: http://www.qsl.net/kb4yz/dignet.txt