Category Archives: US Islands

Flex-6300 K9ZW North Station in QSO

 

Jumping forward from 1977 Collins KWM-2A technology to current technology, here is a photo of the FlexRadio Systems Flex-6300 part of my northern Washington Island station:

K9ZW Flex-6300 Station on Washington Island

K9ZW Flex-6300 Station on Washington Island

There is a lot going on in this little station, so first the hardware:

  • Flex-6300 w/ATU Transceiver with USB digital codec dongle
  • Windows 8.1 USB PC on a stick
  • USB hub
  • WiFi Extender – 1Gb
  • 1Gb router
  • FlexControl
  • Powered Speaker
  • Power supply is under bench
  • wheel mouse
  • keyboard
  • 24in monitor

 

Now here is the important list – the software:

  • SmartSDR v1.5.0 with Free Digital Voice and DStar plus-ins
  • DDUTIL v3.0
  • FlexMeter v1.3
  • N1MM+ logger

The Flex-6300 station got great reports today using a SteppIR CrankIR portable antenna. Mostly CalifornyQSO party station but also worked some DX.

The PC on a stick was an experiment that has worked out fine, and I will leave it for the time being.  When the 6300 is swapped for a 6700 I’ll put in a full PC.

I’m not happy with the included Flex hand microphone but forgot to bring a desk mic up this trip.

Once the permanent antennas are up it is going to be obvious that I will want a Flex-6700 here rather than the limited single SCU Flex-6300.  The 6300 will go to my traveling radio setup at that time.

Made a interesting contrast to last weekends QSOs done with the Collins KWM-2A station  on the same antenna.

73

Steve
K9ZW

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Collins K9ZW North Station in QSO

Eventually I intend to move the late Collins setup in this picture to my home QTH and bring up the S-Line separates set up.

This “Round Emblem” combined transceiver with external VFO for split operations is the final itineration of the S-Line series and was sold new in the mid/late 1970s.

K9ZW Collins KWM-2A Station

K9ZW Collins KWM-2A Station

  • KWM-2A transceiver
  • 312B-5 remote VFO and station console
  • 30L-1 amplifier
  • SM-1 microphone
  • Power supply is under bench

The other Collins station I own is a “Winged Emblem” first of the S-Line series with separate receiver/transmitter. That station is a 32S-1 transmitter, 75S-1 receiver, 312B-4 station console, 30L-1 amplifier, separate speaker and a power supply. The receiver/transmitter track each other usually. It dates from 1958 to 1960 from dating the serial numbers.

It has amazed me how many complex cables interface the various units. There are roughly a dozen cables in the KWM-2A station and about five-six more in the twins S-Line one. Many are simple, but some are complex and some are uncommon – things like RF coax with RCA plugs…..

The microphone jack is a military size and I had to source some as spares.

The KWM-2A station got great reports today using a SteppIR CrankIR portable antenna. Even worked some DX.

The audio has that warm friendly tube-amp sort of sound. Got great reports which I have to admit surprised me. I hadn’t expected it as there are so few adjustments possible compared to a modern rig.

I’m not happy with this particular SM-1 microphone and did make most contacts using an Astatic D-104 “lollipop” microphone instead. The SM-1 will go off for service.

I have a good ways to go in learning to use this gear, but as much fun as I had it is worth the study and practice time to get it right.

Made a interesting contrast to this weekends QSOs done with a barefoot Flex-6300 on the same antenna.

73

Steve
K9ZW

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K9ZW Northern Island QTH .. General Layout

It is obvious the new Washington Island QTH is a FlexRadio System Station first and a Vintage Collins Station second.

I’ve done a quick sketches how the layout will work.

K9ZW North QTH General Layout – outside

and

K9ZW North QTH General Layout – inside

The Antennas are:

  • HF Multi-Band Receive only – KD9SV RBOG (Reversible Beverage On Ground) units, aimed NW, SW, NE, and SE, using a convient existing buried pair of high grade 72 ohm cable to feed.
  • HF 80-10m Vertical – Zero-Five Flagpole with 30 radials
  • HF 160-20m – W9INN Half-Sloper
  • HF 40-6m – SP7IDX Hexbeam

Feedline will be Andrews Heliax I now have on hand.

73

Steve
K9ZW

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K9ZW Northern Island QTH .. First Steps

Have a lot going on putting the new Washington Island QTH together, with a TriEX Skyneedle waiting for a new base from Tasjian and other pieces starting to show up.

With the tower base I’d also ordered a work platform which will let me do most antenna work without a lift, and new coax standoff arms.

From the radio room to the tower base I have sourced enough Andrews 1/2″ Superflex HELIAX FSJ4-50B to ru two feeds and a separate feed to a vertical antenna.  This cable is very low loss, with amazing numbers like under 1 dB total attenuation per 150 ft feed line with working capacity in the 7 kW range!  Velocity factor is 81% for a fairly standard set of characteristics for calculating correct lengths to reduce unwanted electrical and RF characteristics.

The SP7IDX multiband Hexbeam is due in country in a few weeks, right on time.  The W9INN half-sloper is on hand and ready.

Intending to install a Zero-Five commercial grade flagpole multiband vertical antenna, which is especially cool as I really am keen to have a flagpole as well!! I’m going to start with 48 radials cut in sets of six per band.

Planning two KD9SV RBOG reversible on the ground beverage antennas. The pair of 180 foot long RBOG antennas installed in two directions will cover the four “Prime” directions (one NE/SW and the other NW/SE.). Gary KD9SV sells through DX Engineering and I think I have sourced a large roll of military surplus cable that should be a good match for the RBOG antennas. I hope to actually bury these receive antennas to keep them out of harm’s way. If the ends can come together, I already have buried feed lines from an old satellite internet installation.

I’ve bought a 25kW Lp-gas Kohler generator with automatic switchgear for a full site backup. With the power regularly interrupted or running off voltage on the island the plan will be to run all radio gear possible to run off DC from a battery farm and use the generator or mains power to recharge the batteries.

In the morning a local builder is visiting to review the plans for a garage, but I have changed my ideas to keep the operating station in the main house for the foreseeable future.

Another contractor is stopping by to look at road improvements and preparation for pouring various slabs.

Back to the tower the Heliax will terminate at a base of tower cabinet which is where antenna switches and lightening protection gear will also go. From the tower base box up to the antennas will go Davis RF’s BuryFlex cable, which is one I have had very good luck. A nominal 80ft of that coax plays the BuryFlex jumpers to get to the radios from the shack end Heliax termination will add up to on paper under 3 dB total losses.

Back at home the Alfa-SPID rotor should get mounted this week, and all touch up as well as a new Sheetmetal rotor cage cover will be ready before transport to the island.

A PC-on-a-USB-stick now has a nice 28 inch LED monitor, the combination which will initially drive the Flex-6300 Tranceiver.

Given my limited time on the Island and the late start I had, reality is I will be happy to have the tower and main antennas up before winter.

73

Steve
K9ZW

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Dividing Up Gear between QTH’s – Second Look

Did the first update on my radio matrix splitting gear between home and the Island:

HF (Modern)
QTH          Main Rig       Knob Modern Rig   Amp (for Moderns)
Home        Flex-6700       TenTec Jupiter              Alpha 9500/QSO King 6m
Island        Flex-6300      TenTec Paragon II        Expert 1KW
HF (Vintage)
QTH          Vintage Rig           Amp for Vintage
Home        Collins KWM-2A            Collins 30L1
Island        Collins Full S-Line(1)    Collins 30L1
HF Antennas
QTH         Antenna 1           Antenna 2               RX HF          Vertical
Home      T-8 LPDA           W9INN 1/2 Sloper     Pixel Loop     TBD – 1
Island     Hexbeam   $$     W9INN 1/2 Sloper     n/a                 GAP Titan DX
VHF/UHF
QTH            Transceiver   Directional Antenna    Omni Antenna
Home          Yaesu 1800         T-28 LPDA              TBD – 1
Island          Yaesu 1900    #  TBD – 2                     N6JSX Copper J-Pole
TBD-1 – looking at a “flag pole vertical” which may cover both needs
TBD-2 – Initially not a priority
# – may have an Uliboard Interface added
$$ – island will have a W9INN Spacesaver 160-10m dipole as well.
(1) Full Collins S-Line setup consists of:  32S1 Transmitter, 75S1 Receiver, 312B-4 Station Monitor, 516F-1 Power Supply, 30L-1 RF Amp, N3ZI Digital VFO with Memories, Autek QF-1A Audio Filter, SM-2 Clone Mic, Collins Speaker
The Hexbeam is a SP7IDX Mark II HD that Waldi is building for me.
The Island feedline is on the way – between the shack and the tower I have enough 1/2inch Andrews Superflex hardline coming to do two separate runs.  Feedine will transition to DavisRF’s Buryflex for the vertical run (as the tower is a crank down, the hardline is not the right material for the whole feed), a combination which should bring the feedline losses quite low – adding in the vertical run up the tower and the jumper into the shack proper I calculate total system loss less than 1.5 dB loss for the entire feedline at HF and a loss just over 3 dB at VHF/UHF.    These losses are about half of what I have at the home QTH due to the very long feedline runs there.

Note the Island would also gain a Pixel Loop RX Antenna but only if I added a rig that would use it to do diversity reception.  The Flex-6300 cannot do this.

73

Steve
K9ZW

Dividing Up Gear between QTH’s

I’me starting to get a clearer idea of how to handle having to QTH’s

Presently I’m kind of leaning this way on my radio matrix

HF (Modern)
QTH          Main Rig       Knob Modern Rig   Amp (for Moderns)
Home        Flex-6700       TenTec Jupiter              Alpha 9500
Island        Flex-6300      TenTec Paragon II        Expert 1KW
HF (Vintage)
QTH          Vintage Rig           Amp for Vintage
Home        Collins KWM-2A       Alpha-78
Island        Collins Full S-Line    Collins 30L1
HF Antennas
QTH         Antenna 1           Antenna 2               RX HF          Vertical
Home      T-8 LPDA           W9INN 1/2 Sloper     Pixel Loop     TBD – 1
Island     Hexbeam            W9INN 1/2 Sloper     n/a                 GAP Titan DX
VHF/UHF
QTH            Transceiver   Directional Antenna    Omni Antenna
Home          Yaseu 1800         T-28 LPDA              TBD – 1
Island          Yaseu 1000        TBD – 2                     N6JSX Copper J-Pole
TBD-1 – looking at a “flag pole vertical” which may cover both needs
TBD-2 – Initially not a priority

Note the Island would also gain a Pixel Loop RX Antenna but only if I added a rig that would use it to do diversity reception.  The Flex-6300 cannot do this.

Of course there are a lot more things to set up for each QTH

A lot of choices are based on what I have on hand, and I haven’t listed my back-up gear for each QTH, or each go-kit’s gear.

Each QTH gets a Windows-7 PC and an iMac, and most likely a Linux GP Box that will double down as a Music Media Server (I feed my Sonos speakers at home with a headless Linux device already

I may have to build a dedicated box to control the tower at the Island remotely when off the Island, which then can pick up some other monitor-and-measure tasks

Hmmm….

73

Steve
K9ZW

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