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Yaesu FT-840 Encoder Fault Repair

Yaesu FT-840 Encoder Fault Repair

The Yaesu FT-840 was, and still is, a very popular ‘shack in a box’ HF radio. The basic specification is: ‘The Yaesu FT-840 is a compact transceiver with up to 100 Watts output power on all HF amateur radio bands in CW, SSB and FM modes, and up to 25 Watts in AM. Dual/triple conversion […]

How to test the magnetron and diodes in ...

How to test the magnetron and diodes in your microwave oven

My Sharp R-3G54(B)T Microwave Oven, having survived careful but frequent use over THIRTY YEARS, finally passed away a couple of days ago. It was well built in Thailand in 1993…I’ve repaired a few minor problems over recent years, but this time it was terminal, although it didn’t need to be. WARNING: The voltages inside a […]

AVO No 1 Radiac Survey Meter

AVO No 1 Radiac Survey Meter

AVO No 1 Radiac Survey Meter…or Geiger Counter If you attend Ham Radio Rallies in the UK, especially in the North East of England, you will know Alan Clegg a.k.a. ‘The Valve Man’. He bears a striking resemblance to Santa Claus and, quite often, helps people find wonderful things that bring a smile to their […]

Yaesu FT101 Mains Connector Wiring for U...

Yaesu FT101 Mains Connector Wiring for UK

I recently bought an original Yaesu FT101 in an ‘as seen’ condition. There was no accessory socket blanking plug or mains connector supplied with it. WARNING: this information is provided on an ‘as-is’ basis. You undertake the wiring of this socket of your own volition on the understanding that you are competent to do so […]

Wideband Modification for your Yaesu FT-...

Wideband Modification for your Yaesu FT-817

The FT-817 from Yaesu has been one of the most popular portable QRP radios ever made; the discontinuation of the FT-818, its successor, was announced in early 2023. They give you essentially, a shack in a box. Full HF coverage plus 6m, 2m and 70cm, using all popular operating modes: USB/LSB/CW/AM/FM/Packet/PSK-31/RTTY. Power output is up […]

My Collins KWM-380 is sick

My Collins KWM-380 is sick

Yesterday I switched on my Collins KWM-380 as I often do. The lights and LEDs came on, the few short beeps emanated from the speaker, but no signals or S meter deflection. No tuning ‘blips’ as the main tuning knob is turned on the megahertz dial either. The volume control gave an increase in hiss […]

Resurrecting a Philips PM6671 High Resol...

Resurrecting a Philips PM6671 High Resolution Timer Counter

I do like older test gear…it’s normally repairable quite easily and it’s possible to buy it for a fraction of its original price. Equipment that once cost thousands, can be had for just hundreds, or sometimes tens of pounds. I went to the 2022 Galashiels Radio Rally on the 30th of October and spotted a […]

 
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