Home > M0CVO, M0CVO Amateur Radio, Making Waves, Radio and electronics, radio Antics, Uncategorized > Making Waves -Break downs and silver linings

Making Waves -Break downs and silver linings

It all began when something went wrong with my trusty Yaesu FTdx1200.  This being my main HF/6m radio what was I to do?  The screen had gone from displaying all the necessary information to enable QSOs to be made to simply being the white screen of death.

Pic1Fig 1. The Yaesu FTdx1200 white screen of death

Well, I tried doing a full reset but no change, I opened it up and reinserted all the ribbon cables relating to both the screen and the FFT-1 unit but still no change.  So it was time to first contact the dealer I had bought the radio from originally (5 years ago).  They told me that it was probably a screen fault and that the screen would need replacing at a cost of £167 plus labour at £60/hour. So I then phoned Yaesu UK who told me pretty much the same. OUCH!

I ordered a USB to RS232 (9 pin) cable from eBay to see if a software update would cure it. I also found an ICOM IC-746 on auction currently at £299, I put in a maximum bid just in case and, in the meantime, set up my stand by radio for HF – the FT-817ND.  I turned it on and tried to copy some CW but after the lovely DSP features and narrow filters available on the FTdx1200, it sounded like someone had left the barn door open and there were a hundred stations all working on top of each other. Not good at all.

In the meantime, the USB to RS232 lead arrived but, to my chagrin, was the wrong gender – I needed a female RS232 head and this was a male one.  So I ordered another, the other way around.  Whilst waiting for the new cable to arrive I watched the price of the IC-746 rising as others put bids in over the days.  None of them came to the level that I put in originally though and suddenly I am the winner of an eBay auction  for what was one of the radios I could only have dreamed of owning when they were available (very expensive back then).  The price – £344 plus £30 shipping, £374 altogether. So, I scrabbled around in my piggy bank for loose coins and paid for it.

The new (to me) IC-746 arrived five days later complete with a pair of headphones.

Pic2Fig. 2 The IC-746 

I now had to find somewhere in the shack to set it up..

It is a little smaller than the FTdx1200 but still weighs in at 11Kg so |I looked to set it up on the second bench in the shack.  Now this radio would give me something that the Ftdx1200 didn’t have – 100W output on 145mhz as well as HF/50MHz.  I do enjoy operating on 2m SSB and CW but I had another problem following the storms that struck the UK during February my rotator on my VHF mast has broken – it won’t turn so is fixed beaming south west. This will be a job when the weather improves as it means going 8m up a ladder in a tight spot. However, I did manage to find room for the IC-746 and get it set up for 2m using the beam.

Pic3Fig.3 The IC-746 running 144mhz USB and a FRG-9600 RX receiving local airport traffic.

Then the new USB-RS232 cable arrived, so I plugged it into both my laptop and the CAT port on the rear of the Yaesu and logged onto the yaesu.com website.  Following the instructions on the software update page I turned on the radio whilst pressing both the up and down arrow keys and presto – it came back to life.  Wow, that could have been an expensive repair for the sake of a software/firmware glitch! So now I have two HF sets and one good QRO VHF set.  The ICOM does seem more sensitive than the Yaesu at picking out weak signals on SSB and CW but misses out on some of the nice features of the Yaesu which is more a SDR than a traditional radio.  The ICOM does have a scratch in the centre of the screen but I can live with that.  How will they be used? Well, I will use the Yaesu for CW and contests on HF as I have it plugged into the linear amp whereas the ICOM will be used mainly for VHF and, once I get a second antenna up for HF, can be used for dual band monitoring.  I am currently using an antenna switch to switch between them so I can compare them both but this is never the best way.

73 until next time, M0CVO

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