>
>Pat said:
>
>>Would cycling them, say yearly, at least, enhance reliability?
>
>In the UK, protective circuit breakers doing earth leakage ( called RCD,
>residual Current Devices) are supposed to be tripped every 3 months because
>of them showing a tendency to stick.
>
>Since they insisted on fitting the damn things when I had some rewiring
>done slat year, I can't use the linear with the dipole on 80m - the damn
>breaker trips at 250watts out because of the RF getting into it.
? Some workarounds:
1. put a RF bypass C across the RCD.
2. add a coaxial RF choke [4 to 5-metres of coax wound single-layer on
3" to 4" ABS plastic sewer pipe] to the dipole's feedline to keep RF from
returning to the radio-room (and the mains) on the outside of the shield.
The best place for the choke is at the dipole's center feedpoint
3. replace the RCD with a conventional breaker and inform house
residents that it is no lomger safe to take a shower or bath with a hair
dryer.
>Fortunately, the vertical which is the DX antenna, is OK. The dipole runs
>directly over the house, so the field is fairly high, but the things should
>stand a fair amount of induced RF on teyh mains wires.
>
>73
>
>Peter G3RZP
>
>
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>
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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