I have just been given a 40m vertical with no documentation. The antenna has three loading devices (probably capacitor and coil) or such. They are marked High Gain with address on each and separately, 57010 20m 877129, 57010 15m 877131, 57010 10m 877132. Can anyone point me to the correct site for downloadable documentation on such. TANX Chris opr VE7HCB