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Power Pole Connectors
On 01/18/2016 07:13 PM, gareth wrote:
"gareth" wrote in message ... All is rosy now in the garden,and thanks for suggestions. Now, all I need is a 1/4" or so plug and socket so that I can quickly attach the ground terminal to whichever rig is now powerpoled to the ATU and the PSU. I'm using the green/yellow 10mm sq stuff used for earthing in Brit, and 'tis a bit unwieldy to keep fiddling with the wing nut attachment on the back of each rig. Shack is upstairs, front bedroom, earth is ground stake and a fan of microbore tubing apread out over the front lawn. House earth is a TT installation so no probs with PME, etc. ========= RF earth for an upstairs shack can be effectively done with an "earth tuner" e.g. a series tuned variable C /variable inductor with a RF current sensor ie wound toroid/ diode /mA meter and potmeter, having say the inductor end connected to a random length of wire running on the floor in the room (under carpet ) The tuner needs to be adjusted for max RF current (low impedance). Only disadvantage compared with a straight earth wire into the ground is the requirement to retune when changing frequency. The above is often used in apartment buildings where a direct earth wire is not practical. I made such a tuner myself for demonstration puposes ,but MFJ make them (Artificial Ground Model MFJ-931) See also Practical Wireless Mag , October 1990 ,page 21) for home brewing. Frank , GM0CSZ / KN6WH |
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