AC 3rd pin is not going to be a very effective ground for protection from
lightning damage.
Best regards - Bry Carling AF4K
> On May 15, 2014, at 4:17 PM, Robert <rmcgraw@blomand.net> wrote:
>
> Braid is not the best choice for a low inductance RF path. It is although
> necessary for flexible applications.
>
> Personally I bond all equipment to the station supply and do not use anything
> but the AC 3rd pin for safety reasons.
>
> 73
> Bob, K4TAX
>
>
>
> Sent from my iPhone
>
>>> On May 15, 2014, at 2:20 PM, Carter <k8vt@ameritech.net> wrote:
>>>
>>> On 5/14/2014 5:56 PM, Stuart Rohre wrote:
>>> Some Yaecomwoods do suffer from RF entering the rig.
>>>
>>> MOST ANY rig will if you have a bad shield connection on coax jumper, or
>>> have rig too close to the antenna, (second floor shack), and there are many
>>> other rig and feedline issues to rule out in any RFI case.
>> True, can be many causes, but I am in a basement shack. Also, a few years
>> ago, I used a Drake TR-7 on SSB with everything else the same and it worked
>> fine. However, I realize that the TR-7 was not as "computerized" (dependent
>> on microprocessors) as the Omni VI.
>>>
>>> Rule of thumb: Power all equipment from same circuit breaker of the house.
>>> That ensures AC grounds will not be coming from widely different
>>> locations. IF you have to use a long ground wire for lightning protection
>>> ground on the station (like from second floor shack), consider that it
>>> could act as an "antenna" for pick up of RF from the real antenna. You may
>>> need tuned radials, or a radial for each favorite band.
>> Good tip and I believe I am on the same breaker for all the ham equipment.
>> Again, a basement shack and 5 or 6 feet of a single 3/4 inch wide braid from
>> the ground of each piece of equipment to the ground rod right on the
>> outside of the basement wall.
>>>
>>> You could always examine the quality of the grounding of the mike cable
>>> shield. Some older mike cords had just a multi-strand wire wrapped in one
>>> direction and not a hatch pattern wire shield. Some aluminum foil shields
>>> don't make a good low impedance connection by clamping. (Connections that
>>> can't be soldered are suspect).
>>
>> Should have mentioned this earlier, but back in the day before I used any
>> computer interface, I had the problem with both a TT 705(?) mic and a Heil
>> Pro headset. Probably unlikely that both were defective.
>>
>> 73,
>> Carter K8VT
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