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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