I ordered the OHR WM-2 Wattmeter Kit to support my growing interest in QRP operation. It is a nice kit to build using quality components, enabling the builder to make a really useful piece of equipment.
Designed specifically for QRP usage, it operates from 300 KHz – 54 MHz and measures forward and reflected power at QRP levels down to just 5mW. There are three switchable power ranges: 10W, 1W, 100mW. The meter movement has a large, easy-to-read scale covering the three ranges.
Alignment is done using a digital multi-meter. No RF is required.
This is an excellent piece of kit with a professional finish.
Oak Hills Research (website no longer online) has further details with current prices, etc.
Contents
- 0 The Oak Hills Research WM-2 Wattmeter
- 0.1 01. The completed Wattmeter
- 0.2 02. The Kit Components
- 0.3 03. PCB Components Side
- 0.4 04. PCB Solder Side
- 0.5 05. The Two Toroids – Simple to Wind
- 0.6 06. Most Components Installed
- 0.7 07. Co-ax Prepared
- 0.8 08. Co-ax and Toroids Installed
- 0.9 09. Front Panel Decal Fitted
- 0.10 10. Switches Pre-Wired before Connection to PCB
- 0.11 11. Switches Connected to PCB
- 0.12 12. PCB Installed on Spacers
- 0.13 13. PCB Connections Underway
- 0.14 14. Meter and Battery Box Installed
- 0.15 15. Final Connections Completed
- 0.16 The completed Oak Hills Research WM-2 Wattmeter
- 1 Related Website Content…
01. The completed Wattmeter
02. The Kit Components
03. PCB Components Side
04. PCB Solder Side
05. The Two Toroids – Simple to Wind
06. Most Components Installed
07. Co-ax Prepared
08. Co-ax and Toroids Installed
09. Front Panel Decal Fitted
10. Switches Pre-Wired before Connection to PCB
11. Switches Connected to PCB
12. PCB Installed on Spacers
13. PCB Connections Underway
14. Meter and Battery Box Installed
15. Final Connections Completed
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