What do other branches do on Field Day?

Field day operations

At our May WARC meeting on Wednesday 18 May we were given a presentation on how the Patea/South Taranaki branch has approached NZART Jock White Field Day over the last 53 years. Glenn Kingston ZL2KZ, one of our own WARC members, has travelled north each year (with just one or two exceptions, such as when his XYL came down with a high fever) to assist with Field Day operations in South Taranaki.  Glenn showed photos of two Field Day sites used over the last 50 years.

For some time now, the South Taranaki branch has based their Field Day activities at a primary school located along the sea coast north of Patea.  A 60′ aluminium tower (sourced by a member who worked at the Motonui synthfuel plant) is stored on site.   This is erected each year using a local farm tractor or RV as available.   This skyhook allows for an 80m folded dipole antenna to be mounted at near a quarter wavelength above ground.  A 40m antenna is mounted lower down the mast. More recently a secret weapon in the form of a vertical incidence 3 element 40 metre yagi pointed skyward has been added to the line up of antennas.  The yagi has deployed knowledge provided by another WARC member (John Gabites ZL2AQ SK) about the incidence angle for working ZL in Field Day events.

Can WARC get back to its form in the 90’s and 00’s and win the ZL2 Patea Trophy back again from the South Taranaki and Napier branches?   Can we find a low noise sight that will perform as well as South Taranaki’s coastal location?  Can we find another 60′ skyhook like we had access to at Quartz Hill and Athletic Park?  Can we get an enthusiastic team together to operate in the 2017 contest?

A fun film evening was enjoyed by all

Our April 2016 WARC meeting featured a number of film clips of interest to ham radio operators and brought to us by James ZL2ET.   We enjoyed finding out about the decline in electronics stores, but the rise in online electronics parts stores.  We also went looking for gravity waves!

The WARC committee presented a proposal for an honour roll for this website to recognise high achievers amongst our members – past and present. The proposal was adopted by members (the proposal is linked below).

 

WARC Inc AGM – 15 March

Our Annual General Meeting was a speedy one, meaning plenty of time for tea and coffee and a chat afterwards.  The AGM was held on Tuesday 15 March 2016 at the Lutheran Church Hall, King St, Mt Cook, Wellington at 7.30pm.   Officers and committee members from 2015 were re-elected unopposed.

You will find posted below our final annual reports, financial accounts and draft minutes of meeting (to be confirmed at next year’s AGM).

WSPR

WSPR shows open paths on the HF bands

At our 16 February meeting, James ZL2ET gave us an interesting talk on WSPR (pronounced “whisper”) and its applications.

Doug ZL2AOV summarised it as:

“James ZL2ET discussed the challenges and possibilities involved in low-power, very low-speed propagation testing. WSPR (Weak Signal Propagation Reporter) is a computer-driven way to find out which bands are open, when and between what sites; it correlates this data and provides it on-screen.

“Using a presentation prepared by Steve Nichols G0KYA, James took us through the equipment needed: a computer with a sound-card to generate the slow-speed FSK used, a transceiver with accurate and stable frequency control, a source of accurate time (propagation paths are found by comparing accurate time slots of data), and an internet link to upload the data to a central repository for automatic analysis and dissemination. Viewers can see what’s going on by pointing their web browsers at www.wsprnet.org. The files can be analysed by band, time, and even by transmitter source … allowing insights into amateur radio DX prospects.

“Transmitters don’t want to be high-powered (maximum five watts is fine) and milliwatts is possible. A Raspberry Pi model B can be programmed to provide FSK on a preferred frequency at about 10 milliwatts out; an amp can push that to 100milliwatts and a tiny bandpass filter does the rest. Timing accuracy can be guaranteed using a wi-fi usb stick to synch to external clocks.

“The protocol provides for transmission of callsign, locator square, power output (in dBm) for 100 seconds, then listening for 120 seconds. Transmission is FSK, just six Hertz.

“The designer of it all? Professor Joe Taylor K1JT, well known for other innovations in digital modes. The system’s sensitivity is stated to be between 11dB and 15dB better than the human ear. That’s way better than using PSK31 and searching for the characteristic double-lines in the waterfall display!!!!”