First !! ever KH2L to TF QSO on Top Band.

Last year I almost finished a QSO with KH2L in Guam.

The contact was ruined by a  LID with a HB9 call who began calling non-stop on top of the QSO preventing KH2L from hearing his report.

Seconds later the window of opportunity was gone and I have not heard Ed on 160 meters since.

Apparently the LID was cheating by listening on a remote Web based receiver, since he probably could not hear KH2L at all from his own station.

He did not account for the inevitable delays over the internet, causing his transmissions to be completely out of sync with what was really happening.

Although this could be chalked up to a beginners mistake – after all there are many moral aspects of DXing that need to be thought about and we all make mistakes,  a cheater will always be found out eventually.

At the time I did not respond to the LID in any way, but perhaps I should have sent him an email asking for an explanation.

This morning, I saw KH2L spotted on my private DX cluster and immediately listened for him on the JA Beverage but he was quite weak.

The amplifier tripped and another 4 minute wait ensued but KH2L was still there and I was able to raise him for #140.

This is the first ever QSO between Guam and Iceland on 160 meters.

Of course the recording software did not work for some reason, I must usually start a new log file in Win-Test to solve that issue.

The contact has already been confirmed on LOTW.

While checking the LOTW award status, I discovered that I had a confirmation from SV5DKL in Rhodes, Dodecanese, which I had completely overlooked.

The DXCC-160 now stands at 141.

What a pleasure.

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10 January 2010

HV0A in the Vatican was worked for #136 and XE2WWW was worked for #137 and Zone 6.

I had made an error and I was still missing Zone 6.

Conditions now seem to be detoriating, with the Aurora Index now at 6.

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A new level of performance reached

I have finally set up a Harris RF-350 with the associated KW remote controlled amplifer for use with my receive antenna system.

The DX Engineering Receive Antenna Interface for Transceivers is the unit that made this possible.

The only problem was finding a voltage on the Harris radio that would sink to ground under all circumstances of keying.

The solution was found in the Coupler connection on the back of the radio.

I connected a 10k pullup resistor to pin H which carries 13.8VDC and connected the other end of the resistor to pin B (Coupler Key).   This pin goes low on transmit, and could equally well be used to key a small relay if that was desired, but I wanted electronic control of the DX Engineering box.   Pin B in turn went to the Transmit Ground connection on the interface.

In addition, I power the interface itself from pin I, which also carries 13.8V.

Works beautifully.

It was very fitting that the first station I worked with the new setup – operating position C – was JA8NFV.

The Harris radio has filters the size of a amateur transceiver, with performance to match, what an incredible pleasure.

Since both the Harris RF-350K transceiver and the Harris 7224 KW LPA (Linear Power Amplifier) have RF Sample outputs, I set up scope monitoring of the system triggered by the  CW keying.

Update: After using the Harris in battle I am a bit disappointed. The sequencing leaves a bit to be desired, this will be improved with a DX Engineering sequencer already ordered, and there seems to be a bit of filter blow-by on CW. I am hearing CW signals outside the filter passband. I will test another unit to see if this is a common problem, perhaps a bit of contact cleaner will clear this up. On SSB the Harris radios are unsurpassed.

Further analysis indicates that this problem might be caused by  impedance mismatch with the headphones I have been using.  With those headphones, volume is at almost maximum settings so this seems likely.

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28dB pre amplification on Top Band

This is what JA signals sound like with 28dB of pre amplification from a Beverage antenna !

Keying errors on my side are mainly due my fat fingers and because my side tone was set at a low level and I was listening on the loudspeaker…I didn´t hear my own sending…

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Incredible isn´t it?

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Happy New Year in the Arctic

The first QSO in the new year was with JD1BMH in Ogasawara.

The recording is made with almost 30dB of pre amplification from the JA Beverage.

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BA7IO was also heard with clear signals but I was unable to raise him.

BU2AQ in Taiwan was also worked for the second time and we exchanged HNYs.

I took some photos of my view, the first photo is towards the North, the Arctic King may be seen in the distance.

The second photo is taken towards the South.

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