From the mind of Gavin MM1BXF…
The Eltek SMPS 1800 SI 48v switch mode power supply is capable of supplying 37.5A (1800w) so is great for powering 48v amplifiers. The only issue, which is common to most rack mounted SMPSs is they have proprietary connectors on…
Read more
I bought the TMate v1.0 “VFO Tuning Knob” a few years back at Friedrichshafen for use with my Flex-1500 as the TMate was much cheaper than Flex’s own “FlexControl”. When I bought it I was probably still using Windows XP,…
Read more
NOTE: This article was written before FT-8, and even MSK144, became popular. Many of the principals I mention are applicable to both, where I mention FSK441 then MSK144 can be substituted, and where JT6m/JTMS etc is mentioned then FT-8 can…
Read more
For Easter 2015 Bex and me decided to visit my parents in Dumbarton. While there I took the time to catch up with Stevie MM6ZFG a couple of times to play radio. Kilcreggan – IO75OX – 3rd April 2015 The…
Read more
The Problem As a member of the G3PYE contest minions, I bought two 25m runs of Ecoflex-15 back in 2011. A year later we started to notice less power at the antenna end of the runs, we initially put this…
Read more
My mod was based on this article here http://www.rtl-sdr.com/improving-hf-reception-disconnecting-switching-power-supply-rtl-sdr/ I had no success using diodes myself so instead I used an LD1117A 1.2v regulator, which I think is a better solution too. This is the RTL-SDR (R802T) after fitting the…
Read more
The brake in my G-400 rotator bell fell off and got jammed in the gears, this is not the first time this has happened and previously nothing was damaged, other than the brake disk, and I managed to get new…
Read more
As with my other radios (IC-756pro3 IF Tap page, IC-910H IF Tap page & IC-706mk2G IF Tap page) I wanted to tap the IF (Intermediate Frequency 68.33MHz) out of my Yaesu FT-817 to allow monitoring on an SDR radio and…
Read more
As with my other radios (IC-756pro3, IC-910H & FT-817) I wanted to tap the IF (Intermediate Frequency) out of my Icom IC-706Mk2G to allow monitoring on an SDR radio and associated software. The IC-706Mk2G has two IF frequencies, I tapped…
Read more
To save a bit of desk space and to save me getting annoyed at solder getting tangled in my projects I decided to make a couple of solder holders / dispensers.