organisation co-chairmen:glenn mcleod ve3gln pierre cyrenne ve2gpf secretary:tom st julien ve3ofd...

ORGANISATION

• Co-chairmen: Glenn McLeod VE3GLNPierre Cyrenne VE2GPF

Secretary: Tom St Julien VE3OFD Site Manager: Ernie Jury VE3EJJ

• Bi-weekly meetings

• E-mail reflector

• Station Managers

PLANNING

• Corporate sponsorship• Club funding• Political endorsements• Media coverage• Equipment inventory• Antenna inventory• Station managers roster• Site layout• Logging Software (Write Log)• Filters

FIELD DAY RULES

• Stations within 1000-foot circle

• No permanent structures

• 24 hours to set up

• 24 hours to operate

THE DECOUPLING PROBLEM

TX 100 W +20 dBRX 0.2 uV, 50 ohms -160 dB (S/N 10 dB)

180 dB

RX dynamic range 100 dBAttenuation required 80 dB

RX attenuator 20 dBMin. attenuation 60 dB

Near field (one radian) 18 dBFar field 1 WL 20 dB

10 WL 40 dB 100 WL 60 dB

DECOUPLING (Conduction)

• Pass-band filters (Dunestar) 40 dB

• Power-bar filters (Hammond Zap Trap) 80 dB

• Coiled coax

• Coiled power cords

• Ground rods at station

• Baluns

• Toroids where necessary

LAYOUT STRATEGY

• Separate near fields

• Orthogonal polarisations

• Use pattern nulls

• Directivity

EPILOGUE

• TCA Article

• QST article, June 2004

• Website

• CD

• VE3GLN named RAC Amateur of the Year

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