What is APRS Digipeater?

What is APRS Digipeater?

“Digipeater” is short for “Digital Repeater”; a repeater for packet data rather than voice. Unlike the standard voice repeater that receives on one frequency and retransmits what it hears simultaneously on another frequency, the usual digipeater is a single frequency device.

How do I install YAAC?

Raspberry Pi Detailed Installation Directions

1. Download the YAAC.
2. Open a terminal (lxterm) window.
3. sudo bash to become superuser.
4. apt-get install openjdk-8-jre unzip libjssc-java to install the other software modules that YAAC needs as prerequisites.
5. exit from the superuser shell.
6. mkdir YAAC.
7. cd YAAC.

How do you use ISS APRS?

How to work the APRS digipeater on the International Space…

1. Find out if the ISS digipeater is switched on and working.
2. Find out when the ISS will be visible over your city.
3. Configure your radio.
4. Chose the right antenna.
5. Make contact!
6. Fair use:

What is YACC program?

YACC stands for Yet Another Compiler Compiler. YACC provides a tool to produce a parser for a given grammar. YACC is a program designed to compile a LALR (1) grammar. It is used to produce the source code of the syntactic analyzer of the language produced by LALR (1) grammar.

How do I listen to ISS on the ham radio?

The frequency of the downlink should be 145.800MHz. As the ISS climbs above your horizon, because of doppler-shift, listen on 145.805. Switch to 145.800 as the ISS approaches zenith. Switch to 145.795 as the ISS drops toward the other horizon.

How does ISS work?

Stretching out to the sides of the space station are the solar arrays. These arrays collect energy from the sun to provide electrical power. The arrays are connected to the station with a long truss. On the truss are radiators that control the space station’s temperature.

What kind of firmware does a tnc2 clone use?

UIDIGI is firmware (EPROM code) written to be used with any TNC2 or TNC2 clone. This firmware makes the TNC operate as an APRS packet digipeater with advanced functions. (APRS is a registered tradmark of Bob Bruninga – WB4APR)

Where can I find schematics for the tnc2?

Schematics of the TNC2 are available from the download section. Auto-on/auto-off based on the state of USB power. Those running mobile will not have to worry about turning on the TNC when they get in their vehicle or powering it off when then get out.

What’s the difference between the tnc1 and tnc2?

We continue to listen to feedback and improve the design of your favorite TNC. The TNC2.2 has a custom injection-molded case, micro-USB for charging, exposed reset button, and many other improvements. These design enhancements follow on from the original release of the TNC2 which improved on the original TNC1 design as noted below.

Can a TNC-2 ROM be used on a mfj-1278?

I also was never able to use the 1278’s KISS mode successfully which would have allowed it to function simultaneously as an APRS digipeater and internet gateway (IGate) using UIView32. Doing this simple modification will allow you to use any TNC-2 ROM in your MFJ-1278 so you can add a UIDIGI ROM and turn the 1278 into a stand-alone APRS digipeater.