ManPack / Portable Chassis is back in service

I dusted off my old Philips portable chassis, bought a new LiPo battery, and paired it with an Anytone AT-6666 I had that was not being used. I needed to 3d print some side brackets to attache the radio to the chassis but they were easy enough to print up. I'm considering whether to add in my LDG Z11 tuner which  will mean another set of 3D brackets. Not sure yet.

New radio for QRP on 10m

I'm missing my Alinco DX-70 and needed something to replace it for HF. Enter the Anytone AT-6666. Tuned up for 5 watts PEP on 10m although I should be 10W PEP on SSB and still be QRP. I'll see what I can do with 5 watts first. Fingers crossed.

10m Manpack is finished

After a bit of work the 10m manpack is finished. It's built on a Philips TP-92 portable chassis (originally for the Philips FM92 radio) and one of the benefits is that any compact/mobile radio can be added to the unit. I've currently got the Dragon SS485H in there but with a bit of rework my Alinco DX-70 could be used instead.

 

The radio is attached by removing the top cover and riveting it to the TP-92 door. I could have gone with a normal mounting bracket but wanted to maintain the lowest profile for the unit. This makes it a pain to open up the unit as the radio has to be unscrewed from it's top plate but not the end of the world.

 

 

I'm running a 5AH LiPo battery from Turnigy which replaces the original SLA batteries. The original charging circuit and speaker have also been removed. I've added a Power-Meter to monitor the battery......but have put it after the regulator so won't get too much useful info although the ammeter measuring instant and peak current is a good tool to have. With the LiPo in place and the potential to dump a lot of current quickly I have gone fuse crazy with 2 internal fuses and one chassis fuse on the outside.

 

Without the original internals it does lose some of it's weight and potentially some of it's stability although I have not seen this as being an issue so far. Current weight without an antenna is 4.4Kgs.The main antenna is the 2.7 metre ANT-129 military antenna I got in from Greece - great buy and recommended. Without a tuner I am still getting a sub 1.7 SWR on 10m. If you are looking for one for yourself I bought mine on eBay from a great seller (and their eBay photo below):

Military-Whip-Antenna-ANT129-22-30Mhz-New-Old-Stock-PRC-Army-Radio-Singcar-radio

 

I'm not running any counterpoise at the moment as when I tried 2 3m wires my receive went backwards so that area needs a little bit of work.

 

I'm thinking it's nearly time to join the SOTA ranks and start hiking........

When masts are not as they should be...

Myself and Dan went to pick up the 10m mast and found it was not one continuous mast, not even 2 pieces, but about 5 seperate sections bodgied together - even had a tyre iron in there to complete the friction coupling. I got a lot of RG213 co-ax, the UHF CB 6DB and 9 DB antennas, the sections of mast and that was it. The antennas have seen better days but I have restored one of them to a working condition which will probably go up on the new mast. Speaking of which I will still need to buy a new mast but can use the sections I got on the weekend as a cross beam.

No new contacts to report but I have made some progress on the 10 metre man-pack/portable. I purchased a Philps TP-92 which was used to set a Philips FM-92 up as a portable unit. I've now put my Dragon on there and started re-fitting a lot of the old and obsolete components. The watt meter has arrived and I'm waiting on the Li-Po battery and regulator to arrive before I commence the wiring.

Back with a QSO into England

It's been a long time with work and other priorities taking up any spare time. I managed to get a QSO back into Stoke-on-Trent with Ian - G0UWK. Great to get back into Europe while still running 10 watts on 10m. Ian was pushing 400 watts into a 4 element Yagi and coming through to Brisbane very well with some QSB. Summer is coming around in Brisbane so time to get out and about. I also know that VK4 is on the map with respect to SOTA so I'm looking forward to some activations as the summer months drag on. I also need to get my butt in gear and sit the open call exam. Difficult to study at the moment but I'll get there in the end.

EU QSO on the Kenwood TS-120V

Stephan had the Kenwood TS-120V rig fixed in super quick time and after I found out he had to rebuild the VFO I was even more impressed with both his work and turnaround. Good Work Stephan!

After a quick chat with Pete - VK4BT and Barry - VK3NBW (Geelong) they both gave some positive feedback on the audio. Tuning around 10 metres there was a JA pileup but no chance of getting through that one and as the evening changed to night I tried again and came across Dobrisan Bogdan - YO4RIU calling CQ DX from Romania. He was working a few VK stations and after a couple of tries the contact was made just as his signal was beginning to fade in and out.

I'm pretty happy with the Kenwood as the receive is better than my Dragon 485 and the 10 watts made the grade in getting out some 13,111 kilometres to Romania.

Now to get an antenna setup for some of the other bands and see how that goes.

Special event station - Kesennuma earth quake

Just twiddling the dials and came across 8J7FUKKO special event station remembering the Kesennuma earth quake in Japan. A mouthful for us both to pass our call signs back and forth but a good contact.....and my first QSO video below:

Dragon 10m HF portable is finished

A final bit of motivation and I finished my 10M portable radio. Here we are on Sunday finalising the wiring:

It has a Dragon SS-485H HF rig along with a Z11 ATU and runs a 7Ah SLA, All housed in a bench instrument enclosure from Jaycar. Some space constraints within the enclosure so the ATU is on the outside. I have a section to attach some counterpoise wires but haven't made any up yet.

And out in the back garden running a 2.4 metre ex-mil HF whip - ANT-129 22-30Mhz....

A local operator Darren - VK4HDO, came back to my call on 28.480 reporting my audio as good but the signal was low and according to his radio I was about 3Khz off frequency.

.....and with a more managable HF antenna

.....and on the radio bench running into the external 10M vertical

I'm hoping to get it ready for the WIA National field day on the 13th and 14th of April and see how it goes communicating from a hilltop.

I've got GAS....

Gear Acquisition Syndrome continues unabated.... I have removed the 40 channel UHF CB in the car and replaced it with a new Uniden UH7740NB 80 channel narrow band one.





Works well, very happy with it...although I don't care much for UHF CB. The Uniden UH012SX is now in the radio shack.....which led me to a need for a UHF CB antenna for that one....time for some DIY. Following the instructions on http://www.aurfscan.com.au/ I tailored it for 477Mhz. Had problems, split the T-junction, bracket was wrong, drilled mounting holes 10 degrees off vertical.





But it's all done, up in the air pointing North West and hitting Ch2 and Ch7 repeaters. At the same time I took down the Station Master antenna and put up the new version from Shockwave Antennas. A bit of messing about tuning it to 10m and I've now got a SWR of 1.2:1 on 28.480Mhz and now getting all of my meager 10 watts up the stick.



Next items on the list are to chase another HF radio, keen to get onto the 40 metre band. Also starting to plan for the next antenna mast (possible another vertical and a G5RV Jr. dipole). Have to balance this with getting the RGV250 on the road....and upgrading to the Standard licence.

Nearly...kindof....yes....absolutely!!!!

Oleg - RK9UN came through with his eQSL below so the QSO is confirmed. Excellent!!!!!!!!

Siberia? Nearly... nearly....kindof.

Barely made it into Siberia today - a lot of QSB on 28.480 but RK9UN - Oleg and I managed to swap callsigns all the same, and signal reports......I think. Let's see if he confirms the QSO in his QRZ log.......

Aus to Ukraine - 12,842 klms

Another long distance contact into Europe thanks to Alex UR4MSF in the Ukraine. It took a while to get the RSTs confirmed but a 5x5 recieved and a 3x3 provided. Thanks again Alex! Put him onto the VKLogger so hopefully some other aussie hams can pick up some contacts into Europe.

Aus to Bulgaria - 13,272 klms

Just leaving the shed after repairing a Kenwood mic for my 2m mobile rig and thought I'd have a quick scan of 10m and up pops Mike - LZ2DF running an FT-920 into a Yagi and looking for DX contacts in the pacific.

A lot of QSB on the signal but eventually we managed to swap signal reports completing a 13,272 kilometre contact from Australia to Bulgaria. Definately my farthest contact so far and still with the same vertical (new one hasn't gone up yet).

Annoying antennas and other updates

I had some problems last night with the antenna giving me a high SWR intermittently. It didn't seem to matter what I did or what rig I was using I was getting a reasonable SWR reading and then a high one. The antenna tuner was struggling bringing it into something usable and it switched back and forth for a while until I came to the conclusion that my 25 year old 11m vertical is due for retirement.....so I bought a new one. I gave Peter a call at Shockwave Antennas - http://shockwaveantennas.com/ - and after a quick chat settled on just replacing the Station Master with like for like. Some advice on tuning the antenna length for 10m and that was it. I'm looking forward to retiring the current vertical and putting up the new one, I also have a new connector coming and will dump about 5 inches of the RG213 in case I have some water in the coax. Hopefully the intermittent problems will disappear after that although...it is behaving itself really well at the moment. Doh!!!

Other items of note are that the LDG Z11 auto antenna tuner has arrived, gave it a quick test and it worked well. A bit noisy when cycling it's relays during a tune but nothing to worry about. It's about an inch smaller width-wise than the Dragon SS485H I'm looking to pair it with but no problems on depth. Should work well portable.

I also have another 3 antennas on the way: 1 Military HF antenna ~2.7 metres in length, a 10m dipole, and a super flexy antenna for my VX-7 handheld. Gear Acquisition Syndrome (GAS) has bitten hard. I also have an old Kenwood 2 metre VHF rig on the way which I'll pop into the car to replace the scanner I have now returned to the shack.

The Standard licence study material has arrived from the Radio and Electronics School (RES) - http://res.net.au/ - so it's time to knuckle down with the books and get to work on the passing the theory and reg exams.

And the last thing I have done is to install the HRD suite of Ham software. I'm not fussed on the remote control stuff but the HRD Logbook app certainly looks complete.

Another contact with Japan and VK8 (NT)

A quick QSO with JA2DYI - Mike in Nagoya, Japan. A lot of fading on the 10m band today but we still managed the contact.



Also spoke with Peter - VK8HPB in Darwin a couple of days ago. Need to start collecting all the states and territories around Australia.