Date

Ref No.

Items Covered

Feb 2000

1

Introduction. Data comms.  Fundamentals - ASK

Apr 2000

2

High speed data on microwaves. ALE, Slow data on LF.  Fundamentals - FSK

Jun 2000

3

Transceiver control.  Fundamentals - FSK continued, the Shannon limit.

Aug 2000

4

Bandplans and frequencies.  Datamode contesting.   DSP on Amsat Phase 3D.

Fundamentals -  error detection

Oct 2000

5

Latest trends in datacomms.  Audio connection problems. 

Fundamentals - error correction

Dec 2000

6

High Speed packet. Ultra simple datacomms experiments.

Fundamentals - error detection and correction

Feb 2001

7

The VE2IQ ‘Coherent’ BPSK mode

Apr 2001

8

Microwaves and EME data comms ideas.  Spectrum analysis software. 

Fundamentals - BPSK

Jun 2001

9

BARTG, Wolf BPSK at LF. HF Email. Fundamentals - BPSK demodulation

Aug 2001

10

Replacement for the 56002EVM.  The T7F UHF data transceiver.

Fundamentals - clock recovery

Oct 2001

11

‘Listening in’. T7F update. BARTG update. Multiple Data Modes compared.  Windows programming

Dec 2001

12

Microwave data link update.

Fundamentals - waveform shaping and bandwidth control.

Feb 2002

13

WSJT Package.  DAT20 HF Data Transceiver.  Fundamentals - signals in noise.

Apr 2002

14

Wireless LANs and amateur radio.  LF Data comms update.   JASON.

Jun 2002

15

Band planning for datacomms. Packet radio in the south. The DSTAR system

Aug 2002

16

Packet Radio.  Digital voice at Dayton

Oct2002

17

The 5MHz experiment. Data on topband.

Fundamentals - designing a data mode from scratch

Dec2002

18

Flexnet packet radio software.  MIL-STD 110A  Keep your Older Computers

Feb 2003

19

HF Band planning.  More on topband data.  Automatic PC time setting. 

Fundamentals - continued

Apr 2003

20

Tx watchdog timer.  Fundamentals – MS mode continued

Jun 2003

21

Multiple soundcards. Multiple serial ports.  Reverse beacon with digitisation

Aug 2003

22

G3RUH’s Forward Error Correction note.

Oct 2003

23

PSK Reporting. GPS locked signalling

Dec 2003

24

PC Interference. Clock recovery basics.

Feb 2004

25

Five year anniversary - Data Column Feedback

Apr 2004

26

BARTG.   MixW USB transceiver interface.  Digital selective calling.  Digital voice

Jun 2004

27

Windows XP.  MultiPSK.  Modern modem chips

Aug 2004

28

RTTY Beacon keyer.  RTTY software.  More on PC operating systems

Oct 2004

29

ON4KST / microwave chat. WLANs in contests

Dec 2004

30

Some corrections. Globalnet.  Rejuvenating the packet network

Feb 2005

31

LF data modes update.  Datamodes and DxPeditions.  PIC programming

Apr 2005

32

Fourpak packet update.  WSJT update – JT modes.  PICs and WSJT coding.

Jun 2005

33

WSJT - the JT65 mode.  PC command prompt and redirection

Aug 2005

34

New Wolf GUI.   The Numerically Controlled oscillator

Oct 2005

35

Software Defined Radio basics.  Doing it in a PIC

Dec 2005

36

Katrina and ALE.   Chip64. Olivia multi FSK waveform

Feb 2006

37

MM wave exchanger.   Signal averaging.  Timing issues

Apr 2006

38

Soundcard Programming and DSP

Jun 2006

39

Soundcard Calibration. Pseudo Noise / PR sequences

Aug 2006

40

Remote Control

Oct 2006

41

USB Serial Port replacement, 2.4GHz Digital Voice, ALE On The Air Week

Dec 2006

42

Two Modern Datamodes – OFDM  and MSK

Feb 2007

43

Interfacing a PC Keyboard, BBC Basic for Windows, PSK31 generation in a PIC/DDS

Apr 2007

44

Bluetooth Remote Control, IP Over Avian Carrier, IQ Waveform generation, Signal Decoding challenge

June 2007

45