HG3 QRO 80m-30m MLA
HG3-QRO 80-M-30M MLA OPTION
The HG3 QRO 80m-30m is an add-on kit to the HG3-QRO MLA. It supplements the existing HG3-QRO 40m-10m system by adding a second turn to the radiator loop.
Roger Stenbock W1RMS
September 24, 2021 v1.3
Страница 1: ...3 QRO 80 M 30M MLA OPTION The HG3 QRO 80m 30m is an add on kit to the HG3 QRO MLA It supplements the existing HG3 QRO 40m 10m system by adding a second turn to the radiator loop Roger Stenbock W1RMS S...
Страница 2: ...9 extensions Two radiation loop spacers Two zip ties One Adel type clamp Arduino microprocessor with latest firmware Assembly The 80m 30m option adds an additional turn to the existing HG3 radiator lo...
Страница 3: ...sing the existing bolt Connect the two L SO239 connectors back to back to form an offset Connect one end of the add on loop to the output of the two L connectors Connect the other end to the right inp...
Страница 4: ...3 4 See below After all the components are installed dress the loops for a symmetrical appearance Now tighten the loop hanging brackets Figure 5 Loop centering...
Страница 5: ...these values using the SET command once you have installed the Arduino with the new firmware You may need to open the controller case and replace the Arduino it is in a socket no soldering required 6...
Страница 6: ...rn radiator A single turn radiator is somewhat unwieldly Also to achieve resonance on the lower portion of 80m requires a considerably longer loop than simply stretching out the two turn radiator That...
Страница 7: ...data obtained in our lab The upper trace is return loss and lower trace is VSWR Note the narrow bandwidth and excellent VSWR While requiring more careful tuning it does provide significant noise redu...
Страница 8: ...7 Figure 10 40 Meter Scan Figure 11 30 Meter Scan end...
