| Title |
Date |
Categories |
| HF current balun project |
03/09/10 |
Transmission Lines |
| Field Strength
Calculator
(FSC) update -
V1.0.10 |
30/08/10 |
Software |
| Loss in antenna conductor materials |
24/08/10
|
Antennas
|
| A graphical explanation of
energy flow in a practical transmission line |
16/08/10 |
Transmission Lines |
| Measuring TS2000
Noise Figure using
NFM and RFD2305 |
14/08/10 |
Receivers
|
| Noise Figure Meter (NFM)
update -
V1.9.0 |
14/08/10 |
Software |
| Ambient noise survey, Bowral NSW
on 40m, 13/08/2010 |
13/08/10 |
Receivers
|
| Measuring
average or mean power of a complex radio frequency wave |
12/08/10 |
Measurement |
| Optimum length of ladder line |
12/08/10
|
Transmission Lines |
| Reorganisation
of VK1OD.net |
08/08/10 |
Admin |
| Effect
of receiver mismatch on line loss and system noise performance |
08/08/10 |
Receivers
|
| Making sense of the
frequency readout on transceivers |
08/08/10 |
Measurement |
| Measuring noise with an AM receiver |
08/08/10 |
Measurement |
| What is RF Peak Envelope Power
(PEP) |
08/08/10 |
Measurement
|
| ATU
efficiency – an example |
08/08/10 |
Antennas |
| Corrosion
protection of antenna connections |
08/08/10 |
Antennas |
| Shielded
station earth conductor |
08/08/10 |
Antennas |
| The effect of a short
discontinuity in transmission line characteristic impedance |
08/08/10 |
Transmission Lines |
| Twelfth wave TL transformers |
08/08/10 |
Transmission Lines |
| ARRL transmission line loss graphs |
08/08/10 |
Transmission Lines |
| Accuracy of VSWR meters at high
sensitivity |
08/08/10 |
Transmission Lines |
| Inductance
of RF cored inductors and transformers |
08/08/10 |
Baluns |
| Counting
turns on a toroidal core |
08/08/10 |
Baluns |
| Chinese
concrete mixer performance |
08/08/10 |
Other
|
| The Beta or Hairpin Match |
06/08/10 |
Antennas |
| An
explanation of the Comet CHA250 |
06/08/10 |
Antennas |
| Estimating T match ATU
efficiency |
06/08/10 |
Antennas |
| Transmit
ALC and RF Power Amplifiers |
06/08/10 |
Transmitters |
| Power
rating of the BLF278 in class AB |
06/08/10 |
Transmitters |
| Power
rating of the BLF248 in class AB |
06/08/10 |
Transmitters |
| Thoughts
on improvements to the PA0V 144MHz BLF278 amplifier output circuit |
06/08/10 |
Transmitters |
| Synthetic fibre rope for antenna
rigging |
06/08/10 |
Rigging |
| Mast
tube designMast tube design |
06/08/10 |
Rigging |
| Is the K0FF mast step safe? |
06/08/10 |
Rigging
|
| Spotless days around solar
cycle transition
July 10 |
05/08/10 |
Propagation |
| In
pursuit of dipole resonance with an MFJ259B |
05/08/10 |
Antennas |
| Optimising
a coax fed half wave dipole |
05/08/10 |
Antennas |
| Link
coupling transformation ratio |
05/08/10 |
Transmitters |
| Collins
30L-1 and AM |
05/08/10 |
Transmitters |
| Minimum
length of a non-resonant multi-band dipole |
05/08/10 |
Antennas
|
| Envelope
Distortion in SSB AM |
03/08/10 |
Transmitters |
| Spectral content of anode current in
Class B/AB RF amplifier |
03/08/10 |
Transmitters |
| Feeding multiband dipoles with
open wire feeder and balun |
03/08/10 |
Transmitters
|
| Is
a 4:1 balun a good choice for use with an ATU on HF? |
03/08/10 |
Baluns |
| Baluns
and ATUs |
03/08/10
|
Baluns
|
| Loss
components in practical transmission lines at HF |
02/08/10 |
Transmission Lines |
| Does SWR damage HF ham
transmitters? |
02/08/10 |
Transmission Lines |
| A simple VSWR analysis
without mirrors |
02/08/10
|
Transmission Lines
|
| Improved
resolution of relative power
measurement using a directional wattmeter |
02/08/10 |
Measurement
|
| Using
my Excel cubic spline interpolation
functions |
02/08/10 |
Measurement |
| Digitising
published graphs of component characteristics |
02/08/10 |
Measurement |
| Correct
use of wire rope
(‘bulldog’) grips |
01/08/10
|
Rigging
|
| Comment on W6VAT article on VSWR |
01/08/10
|
Transmission Lines
|
Antennex
publishes Owen Duffy?
|
01/08/10
|
Admin
|
| Field Strength Meter
(FSM) update -
V1.4.1 |
02/07/10 |
Software |
| FINDDR
updated - V1.04 |
28/06/10 |
Software |