PACKET

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PACKET - Robust PACKET
PACKET
PACKET 300.jpg
Frequencies 3 MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
,800 MHzMegaHertz (MHz) 10^6 Hz800,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
800,000 kHzKiloHertz (kHz) 10^3 Hz
3,000 kHzKiloHertz (kHz) 10^3 Hz
MHzMegaHertz (MHz) 10^6 Hz
800,000 kHzKiloHertz (kHz) 10^3 Hz
800 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
- 800 MHzMegaHertz (MHz) 10^6 Hz800,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
800,000 kHzKiloHertz (kHz) 10^3 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation FSKFrequency-Shift Keying
ACFAutoCorrelation Function
Bandwidth 730 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.73 kHzKiloHertz (kHz) 10^3 Hz
7.3e-4 MHzMegaHertz (MHz) 10^6 Hz
0.73 kHzKiloHertz (kHz) 10^3 Hz
7.3e-4 MHzMegaHertz (MHz) 10^6 Hz
0.73 kHzKiloHertz (kHz) 10^3 Hz
7.3e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description PACKET, also known as FSK300, AX25, and X25, is a packet based protocol derived from AX.25 and HDLC computer network protocols. Packet radio is a synchronous system in which data is transmitted in ASCII character packets.
I/Q Raw Recording
Audio Sample
PACKET, also known as FSK300, AX25 or X25, is a packet based protocol derived from AX.25 and HDLC computer network protocols. Packet radio is a synchronous system in which data is transmitted in ASCII character packets.


There are a number of variants that exist. For HFHigh Frequency (3-30 MHz), there is PACKET 300, and for VHFVery High Frequency (30-300 MHz), there are a number of variants, although the most common is PACKET 1200 and PACKET 9600.

PACKET-300[edit]

PACKET-300 uses FSKFrequency-Shift Keying modulation with a 200Hz shift and a 300 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. symbol rate (seldom seen with 600 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.). On amateur frequencies above 30 Mhz, higher speeds such as 1200 and 9600 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. are typically used. In the US, it is illegal for hams to use speeds above 300 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. on frequencies below 28 Mhz due to FCC regulations.

PACKET-1200[edit]

PACKET-1200 uses FSKFrequency-Shift Keying modulation with a 1000Hz shift and 1200 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. symbol rate. There are a number of variations that exist of PACKET-1200, including a PSKPhase-Shift Keying-based satellite version. PACKET-1200 can be seen in the VHFVery High Frequency (30-300 MHz) and UHFUltra High Frequency (300-3000 MHz) bands with indirect FMFrequency Modulation Modulation. FMFrequency Modulation bandwidth is 12 kHzKiloHertz (kHz) 10^3 Hz

PACKET-2400 and PACKET-4800[edit]

These are just some more variants of PACKET that operate on 2400Bd and 4800Bd.

PACKET-9600[edit]

PACKET-9600 uses GFSKGaussian Frequency-Shift Keying with a 4800 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). and 9600 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. symbol rate. PACKET-9600 can be seen in the UHFUltra High Frequency (300-3000 MHz)-SHF band. FMFrequency Modulation Bandwidth is 15 kHzKiloHertz (kHz) 10^3 Hz

Samples[edit]

PACKET 300[edit]

PACKET 300
PACKET 300.jpg

Additional Samples:

Sample 1:

Sample 2:

Sample 3:

PACKET 1200[edit]

PACKET 1200 PACKET 1200
PACKET 1200.jpg
PACKET1200.jpg

Variants:

1200 Zero Crossing
600Hz/1200Hz
1200 Zero Crossing
1200Hz/2400Hz
1200 PSKPhase-Shift Keying Sattelite
600Hz/1200Hz
1200 FX469
1200Hz/1800Hz
PACKET 1200 Zero Crossing 600 1200.jpg
PACKET 1200 Zero-crossing 1200 2400 .jpg
PACKET 1200 PSK Sattelite.jpg
PACKET 1200 FX469.jpg

PACKET 2400 and PACKET 4800 Variants[edit]

PACKET 2400 FX469
1200Hz/2400Hz
PACKET 4800 FX469
2400Hz/4800Hz
PACKET 2400 FX469.jpg
PACKET 4800 FX469.jpg

PACKET 9600[edit]

PACKET 9600
PACKET 9600 2.jpg

Another Packet 9600 sample:

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Additional Links[edit]

Additional Images[edit]