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SWR METER
STANDING WAVE MEASURING DEVICE
PEP WATTMETER
NEXTION TOUCH SCREEN DISPLAY
This device was designed as an SWR and power meter for Radio Amateurs
.
In addition to SWR, it measures forward and backwards
power, therefore can also be used as a wattmeter.
With a large measuring range from 1 to 1000
watts, it is suitable for use from QRP to QRO.
DJ9PK
http://dj9pk.de
Feb. 2021
V
SWR Meter – PEP Wattmeter
Tel: 07032-985866
Page: 1 of 8
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Summary of Contents for SWR DJ9PK
- Page 1 STANDING WAVE MEASURING DEVICE PEP WATTMETER NEXTION TOUCH SCREEN DISPLAY This device was designed as an SWR and power meter for Radio Amateurs In addition to SWR, it measures forward and backwards power, therefore can also be used as a wattmeter.
- Page 2 If the displayed values of an RF carrier signal wobble in the "fast" setting (more than only the last digit), this is not caused by the SWR meter: This is hum in the RF source. This has been observed several times, especially with larger power amplifiers.
- Page 3 Buttons on Page 1: Buttons on Page 2: SWR Meter – PEP Wattmeter Tel: 07032-985866 Page: 3 of 8...
- Page 4 Technical Details: The microprocessor corrects the Non-Linearity of the Rectifier Diodes in the SWR sensor. This ensures a high level of accuracy is achieved (typically 3%) over the range from 1 to 1000 watts. The resolution for low power is 10mW. This is reduced at higher outputs due to the number of digits available on the display.
- Page 5 The “background” button is new. It allows switching the background from the previous speckled gray to black. The black background provides a higher contrast. The background setting then applies to all pages. SWR Meter – PEP Wattmeter Tel: 07032-985866 Page: 5 of 8...
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Page 6: Circuit Diagram (Display)
Circuit Diagram (Display): SWR Meter – PEP Wattmeter Tel: 07032-985866 Page: 6 of 8... - Page 7 Circuit Diagram (SWR Sensor): SWR Meter – PEP Wattmeter Tel: 07032-985866 Page: 7 of 8...
- Page 8 Layout and Placement Diagram SWR Meter – PEP Wattmeter Tel: 07032-985866 Page: 8 of 8...