This page is all about QRP -
I often take my Yaesu FT-
The 817 is an ideal bit of kit for this purpose. It is a full HF/VHF/UHF transceiver with built-
I have a small paddle which bolts on to the side of the 817 for CW operations.
For VHF (2m) hill-
For HF I have developed a 15-
The weights are:
That’s a grand total of 1660 gms to which you have to add a 6m fibre glass pole which weighs in at 650 gms. A total of 2.3kg!
The dipole centre-
The cable has a SMA socket and makes up the choke balun. The 4mm plastic nut, bolt and washer were not used because the choke balun sits flat against panel. The choke balun was formed by the coax being wound around the little ferrite ring. The free end of the coax passes down through the centre hole in the plastic where the coax inner and outer are split out. The ends of each are wound round the ‘ladder-
The next picture shows the parts before assembly and test.
The picture above is the whole antenna wound on to a medium sized wire winder from SOTABeams. Total weight of aerial is 130 grams, the downlead is 160g and the winder adds another 30g. It is perfectly tuned so that no ATU is required. This all helps to keep down the weight.
Parts used in QRP antenna
PL239 to SMA Adaptor
SMA Cable (one end to be sacrificed)
Antenna Traps are 10W PICO Traps from http://www.sotabeams.co.uk/
Dipole centre from http://www.sotabeams.co.uk/
Medium wire winder from http://www.sotabeams.co.uk/
Copyright © Colin G4GBP