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I carried out my first modification to the KX3 – or rather to the KXPD3 paddle. It was the mod to solve the missing dah problem. I hadn’t experienced it, but it was one of those issues that would rear its head at the most inconvenient opportunity so I decided to do the mod. This involved disassembling the KXPD3, cutting one track and bridging two pins on the key’s circuit board.

The KXPD3 came apart easily, in fact rather too easily as it disintegrated into its component parts before I had a chance to see how it went together. That’s the trouble with taking apart something that has a spring in it!

I then cut the track indicated and bridged from one pin to the adjoining track. Why is it so difficult to make a solder bridge when you actually want to.

I reassembled the KXPD3. Before I did I dismantled a couple of 409Shop complimentary ball point pens to see if they would provide an alternative spring for the paddle. They did, but they didn’t seem to be weaker than the original (the only way to alter the tension with this key is to change the spring) so I reassembled using the original.

After that I connected the KX3 up to a dummy load to try out the modified key and confirm that I hadn’t broken it. The key still worked, and my sending was still as bad as it was before, so all was as expected.

I hade a tune around on 40m and heard one of the special even stationsfor the Olympics, 2O12L. He was loud enough to be an easy contact with the QRP KX3 – but I was getting no transmit output! Eventually I switched to the K3 and worked 2O12L followed in quick succession by the Welsh Olympic special event station 2O12W.

After I had completed the cotacts I switched back to the KX3 to find out why I was getting no SSB output. I found that VOX was working, the rig was switching to transmit, but I was still getting no output.

Eventually aftter much tearing of hair and playing with settings I discovered the reason for the problem. I had turned the power down to 0.0W when I was testing the keyer…

Words fail me.

My current assignment at Fort Leavenworth has me traveling quite a bit. My intent has been to bring a rig with me and have some casual QSOs while on the road. My success has been mixed. I would mostly attribute this to either a lack of planning on my part or being in a stuck in a hotel room with zero antenna opportunities.

One of the most inspiring ham radio blogs I ever ran across was the 100 Pound Dxpedition. I enjoyed how Scott, NE1RD, covered his adventures of conducting portable operations… documenting what worked and what did not. His last post on that paticular blog was back in 2007, but I still use the site as a reference. Scott’s praise for the Buddipole led me in using the Buddipole during my recent tour in Korea. Another tip from Scott I am going to try out is using a hardside golf bag case to transport my Buddipole to Hawaii.

Now for a rig… I think the Elecraft KX3 would be ideal for a Hawaii trip. With 10 watts output and an internal battery, I can’t think of better rig to take to the beach. But the wait time for the KX3 is still quite a while. I have both an Elecraft KX1 and a Yaesu FT-817ND. The KX1 would be great due to its small size and ease of use. But it is limited to only CW and I would like to do some PSK in addition to CW.

I pulled out my FT-817 and conducted an inventory:

– West Mountain Radio RIGblaster Plug n Play connects directly to the DIN socket on the back of the rig.
– CAT cable that connects from the RIGblaster to the rig’s ACC socket which enables rig control.
– PowerPole 12v adapter.
– Palm Paddle.
– Elecraft T1 Auto-tuner.
– Nifty manual for the FT-817.

My FT-817 has quite a few of the optional bells and whistles from W4RT:

– DSP module
– Kranker Knob – probably the most useful of any of the options
– One Board Filter (300 Hz)
– Speech compressor built into the MH-31 handmike
– Why all the options? The FT-817 was the center piece of my 2009 Field Day setup and I was attempting to get the most I could out of the pint-sized rig.

I also splurged on two recent upgrades:

– Peg Leg tilt stand – I think this will be helpful as one of my significant dislikes of the FT-817 is the small display which is hard to see.
– Magnets for the Palm Paddle – this is critically important as the Palm Paddle by itself is not heavy enough. The magnets allow the Palm Paddles to firmly stick to the top of the FT-817.

For PSK, rig control, and logging I have my Dell Mini netbook. I had not used the netbook in a while, so I started it up to see how it was working. I initally purchased it back in 2009 baselined with Ubuntu and have kept Ubuntu installed on it since then. After booting it up. I updated the distribution to 10.04 LTS and installed fldigi. The RIGblaster easily interfaced with the netbook via a USB connection and the headphone/microphone jacks.

I configured fldigi to work with the RIGblaster to include rig control using Hamlib:

– Audio: PortAudio using the netbook’s hardware soundcard for both Capture and Playback
– Rig: Hamlib; Device /dev/ttyUSB0; Baud rate 38400; Stopbits 2; PTT via Hamlib command checked

… clicked on the Initialize button and I was good to go.

Setting up the macros on flidigi is pretty straightforward with the default macros only needing slight tweaking for my personal preferemces.

Once I fired everything up all I had to do was switch to 14.070 MHz, switch the mode to DIG, and drop the input level a bit. With the narrow yellow PSK streams cascading down the waterfall, I picked one that was calling CQ and answered. Transmit worked and my home antenna provided a nice low SWR, no need for the tuner. My macros worked and the QSO was concluded successfully. All with 5 watts.

I plugged in the Palm Paddle, switched to 7.115 MHz, listened and heard nothing, then used the paddles to send QRL? a few times. SWR still looked decent. After a few CQ calls, I got an answer followed by a short QSO. Great – both PSK and CW were working FB.

Now the question is: do I want to bring my small Tokyo Hy-Power HL-100B amplifier that will raise the output to 100 watts? If I bring the amp, I will have to bring a power supply and a different tuner. I am thinking I need to be able to use two different configurations:

(A) Beach and Buddipole: using the barefoot FT-817, running everything on batteries.
(B) Lanai Portable: used from the hotel room, with amp and assoicated power supply.

Now it is time to go through my Buddipole bags and figure out what I need to pack.

Looks like I will be there during the Hawaii QSO Party!

Posted by Todd., W7TAO on the KX3 e-mail reflector.  Todd, like Steve WG0AT is also quite the portable ops devotee. He also has pack goats that he brings along on his adventures; but not this time.

The sheer beauty of this SOTA site is magnificent.  I think you will agree

72 de Larry W2LJ
QRP – When you care to send the very least!

I freely admit that I am more of an operatin’ kind of guy and not a techno-wizzy type Ham.  I got my KX3, put it together, marvel at its abilities and am on the air with it, a lot. And excuse my language, but I am enjoying the hell out of it.

I look at the KX3 e-mail reflector and I’m seeing all these “wish list” posts, with guys wanting this and that added to the next firmware edition.  I shake my head, cause obviously these guys are all light years ahead of me as Amateur Radio operators.  I’m pretty content with the radio as it is.  About the only thing that I would like to see changed, if I could, is how the power level changes.  When I twist the power level knob, I see the output power change in 0.2V steps.  In other words we go from 5.0V to 4.8V, completely skipping 4.9V.  I guess I would like to see that curve smooth out to be a tad more linear.

But that’s it.  No requests for the sun, moon and stars.  Heck, half the things these guys are asking for, I can’t even figure out!  As advanced as this radio is, I remain a humble dial twiddler.  I actually managed to hook the radio up to my netbook and got rig control software to do its thing.

I remained unimpressed.

Perhaps, if I was a contester or big gun DXer, I would appreciate that kind of thing more.  Me, I’m just a ham and egger.  I appreciate the radio, it’s features and the genius behind it – courtesy of Eric, Wayne and the KX3 development team.  And no doubt, I’ll keep downloading future versions of firmware and will keep the radio as up to date as possible.  But the more esoteric stuff, I will leave to those light years ahead of me. I’ll be content to go along for the ride.

72 de Larry W2LJ
QRP – When you care to send the very least!