RMG "technical forum"

Thomcast-2304.html

We are always looking for articles suited for this page. All topics covering technical subjects, microwave hints 'n' kinks, etc., would be appropriate. Inputs and suggestions are solicited!

Articles and Tutorials

100 Watts on 2304 with a Thomcast MDS Transmitter
Modification of "600W" Motorola 900MHz PA
Maps of 5th call area states showing counties & grids
Build a 432MHz beacon!
Modification of 150 & 300 W Motorola 900MHz PAs
An Alford slot antenna which works - de W5OE
Taking the mystery out of the Alford slot - de W5OE
LSCX: MICROWAVE ALPHABET SOUP - de EDN
Converting Chan'l Master 11.7-12.2 GHz LNB
Protecting the Feedthru Capacitor during Conversion
Print a compass rose. Use browser "back" to return.
Reflocking DEMI microwave xverters - de N3FTI (pdf)
Reflocking DEMI microwave xverters - de KD7TS
Thoughts on generators de K8JRO
13cm on a Budget - de K5LLL
Mod'ing mwave Assoc's "WHITE BOX" - de G3PHO
Heatsink theory and calculations
Mod the Radio Shack xcvr for xvrtr-IF use - de K5VH
JT44 & JT65 info + the WSJT software - de K1JT
NOAA Satellite & Info Svc - Mag declin'n calculator
Basic Microwave design theory: GOOD STUFF!
Minicircuits Application Notes
Outline of talk on Run 'n' Gun Roving de ND2X
Concept paper on 3-band MW transceiver; 242KB pdf - de Nx1N
Slides from talk on 3-band MW transceiver; 218KB pdf - de Nx1N
Use standard N connectors on LMR 400 & 9813 Coax - de K5JL
The relationship between temperature & noise figure
Taking the mystery out of return loss.
Figures & drawings for ring hybrid combiner/splitters
W5OE PPT: building a ring-hybrid splitter/combiner
Shield Effectiveness of Perforated Metals (Hendrick Mfg Co)
Detail of Maidenhead subgrid designators & dimensions
The Toshiba Linear Microwave PA on 3.4GHz de W3HMS
The Toshiba Linear Microwave PA on 3.4GHz de K5VH
Make your own transformer
Waveguide types (IEC, EIA, British & JAN) & antennas
PDF with all documentation & drawings - de WA6CGR

Javascript Calculators

Power Level Calculations

1. Adding Power Levels

2. Power Level Changes

3. Gain/Attenuation from change in power level

Antenna System and Transmission Line Calculations

4. Antenna System Parameter Analyzer

5. Physical length of coax for a given electrical length

6. Coaxial Cable "cutoff" Frequency

7. Parabolic Reflector focal length and f/D

8. Rectangular waveguide cutoff frequency and attenuation

Path Loss and Field Strength Calculations