Welcome to RemoteDX

remoterigThe Quartz Hill User Group (a committee of the Wellington Amateur Radio Club Inc) operated ZL6QH from Makara from 1997 – 2007.  The arrival of a collection of wind generators on the site saw us departing as a result of the S9+40 interference!

For several years we searched for a replacement site. Eventually we came to the realisation that we weren’t going to find a site that would host a collection of long wire antennas (with 300m legs).  We needed to rescale the vision! We came up with the idea of remote sites with a smaller footprint … using antennas such as fixed beam antennas on the higher HF bands and four square arrays on the lower bands.

With the support of our host branch (Wellington Amateur Radio Club Inc – Branch 50 NZART) the then Chair and Secretary/Treasurer of the Quartz Hill User Group (Mike ZL1AXG and Doug ZL2AOV) visited branches in the area to gauge interest in the creation of a new special interest group.  There seemed to be quite a bit of interest with around 50 people signed up to receive email updates.

A plan was hatched to launch a new incorporated society in November 2016 that would administer any remote site(s) and related support technologies including the high speed regional broadband network used to transport signals into our home QTHs.  RemoteDX is not about creating a new NZART branch, but rather it is about creating a regional support structure for joined up amateur radio projects in the region.

This site provides information about RemoteDX Inc, its current projects, and future projects planned to support amateur radio within the Wellington region.

Mike ZL1AXG
(updated May 2019)

QHUG committee to negotiate access to a site

The QHUG Committee is making good progress on the remote site equipment.  Recent activity has included:

  • Nearly complete fit out of the enclosure
  • Purchase of a transceiver (IC7100) specifically for the site
  • Approval to negotiate with a potential site owner
  • Testing of software for remote control equipment
  • Completion of base and remote control units
  • Planning for solar panel installation

Fitting out of the Enclosure

Inside the Remote Site enclosure
Inside the Remote Site enclosure

Bernard ZL2BD has been busy over the summer installing the equipment for th Remote Site in the enclosure.

The enclosure (a ply box with inside and outside layers of fibreglass) is shown fitted out with:

  • Wellington Amateur Radio Club (www.zl2wb.com) transceiver (Icom IC7410)
  • Solid-state linears and power supplies (donated by Kordia Ltd)
  • Switching regulators to provide 230v DC, 24v and 12v DC for the various items
  • Two solar panel regulators
  • Wiring harnesses to connect to the huge battery bank.

Progressive testing is imminent – any noise problems will be dealt with as they arise.  A range of jobs remain including:

  • Completing the antenna switching equipment
  • Completing and testing the SCADA software to operate remotely (SCADA = Supervisory Controller & Data Acquisition). Frank ZL2TTS has been working on this.
  • Cooling circuitry – both assembly and installation.  The cooling equipment will be mounted on the enclosure’s front panel.

This work is not too far off being completed and the QHUG team will then move to a test period to ensure everthing works correctly, before antennas are constructed and the equipment is installed in the remote site.

Antenna systems overview

The QHUG remote HF station site has yet to be finalised.  However, a couple of sites are being actively investigated.

The plan is to install four square antennas on the lower bands (80m, 40m and probably 20m) and to use fixed yagi antennas for higher bands.

Much of the cost of low band antennas is in buried radial systems.

Two QHUG committee members have been experimenting with construction of four square controllers (as indicated below)

An early prototype from ZL1AXG

Remote switching equipment is also being built.  This includes four square switches and antenna switchs.  Arduinos are being used at remote and base station to provide a physical controller at both ends.  Bernard ZL2BD has designed the hardware and Frank ZL2TTS has been designing software.

Remote site enclosure

Enclosure-Bernard-ZL2BDA remote site enclosure was purchased by the QHUG committee in September. The cabinet is approximately 960mm x 960mm x 1800mm.   It is made of 18mm plywood and covered in fibreglass inside and out for a fully weatherproof finish.  The door is fitted with two security locks.

This is an ideal enclosure for a remote site and was obtained at a very reasonable price.  Thanks also to Malcolm ZL2UDF for facilitating transport of the enclosure to Wellington.

Mesh node expansion

Mt Climie small
Installation of an Airgrid M2 at Mt Climie

Mesh nodes on high points will extend the Wellington mesh network into areas where remote sites are likely to be feasible, including the Horowhenua (on the West Coast north of Wellington) and the Wairarapa (to the East of Wellington over the Rimutaka mountain range).

In the photo above, amateurs from several branches cooperate to install a mesh node on top of Mt Climie, which looks down over the Wairarapa and the Hutt Valley.  The Mt Climie node gets traffic from another high site at Colonial Knob (near Porirua).   James ZL2ET already has an experimental node outside Carterton in the Wairarapa working through Mt Climie.

Initial Remote Site Transceiver

The remote station will initially use the Wellington Amateur Radio Club Inc club transceiver (an Icom IC7410), with glass screen (using Ham Radio Delux at the city station end).  Once the remote station is up and running, dedicated equipment is likely to be purchased.   The plan is to initially have at least two remote radios and a collection of switchable antennas for non-WARC bands 80m through 10m.

Icom IC7410 Club Transceiver