[Heathkit] Running the HX-10 Marauder outside its cabinet

[rbethman]

That is also true.

However, when I am running AM, as I was at the time with a BC-610, I did 
NOT get into my own.

This person's portable phone was apparently some cheap "Chinese" garbage.

It has been a VERY long time, but I blanked out the neighborhood cable 
TV system.  This goes back to the first year I was licensed.  What made 
it even more weird, was that my OWN TV located less than six feet away, 
was NOT affected!

It happened to be a quirk caused by the Cable company replacing the drop 
to my QTH with cable that had a total of three drain wires for ground.

I went through everything I could.  Then I called and asked to speak 
with their Chief Engineer.

He and a team came out to my house.  They sniffed the shack,, and then 
the Chief went up in a bucket to the distribution amp on the pole.

He had me once again light up.  While he was taking readings, he 
disconnected MY drop.  All the signal went away.

It turns out that they had put in that garbage cable, managed to 
parallel one half of MY dipole.  The Chief took out a pocket knife, 
sliced off the jacket of my drop.  He immediately had a rapid discussion 
with his team, and sent them scurrying to get some REAL shielded cable 
on site IMMEDIATELY!

All the problems went away.

Bob - N0DGN

On 11/11/2011 3:10 PM, Ross Stenberg wrote:
> Amplified computer speakers can also be a culprit.
>
> On 11/11/2011 1:56 PM, rbethman wrote:
>> It is true that TVI isn't an issue in reality.
>>
>> The Mohawk, Apache, and Marauder all used the same cabinet.  The Apache
>> and Marauder have shielded enclosures for the PA.
>>
>> I don't know if the DX-100 cabinet is the same or not.
>>
>> However, I suspect that the rack would perform adequate RFI enclosure duty.
>>
>> The only issues I have run across regarding RFI in the last number of
>> years has been ONE squawk from someone in the neighborhood that happened
>> to hear me through their portable telephone.
>>
>> I pointed out that it was subject to Part 15, and therefore interference.
>>
>> That ceased the grumbling.
>>
>> Bob - N0DGN
>>
>> On 11/11/2011 2:47 PM, Ross Stenberg wrote:
>>> For what it's worth, TVI is a rare thing since analog TV has gone away
>>> and everything is digital mainly in the UHF region. The lower frequency
>>> TV channels basically do not exist anymore.
>>>
>>> On 11/11/2011 12:24 PM, Rick Poole wrote:
>>>> Good afternoon...
>>>>
>>>> Just wondering if it is safe, from a TVI / RFI perspective, to run
>>>> the Heath HX-10 Marauder outside of its cabinet.  I want to
>>>> rack-mount it in a standard 19" rack, and of course can't do that if
>>>> it's in its cabinet.
>>>>
>>>> The DX-100B (at least, the one I have) doesn't have any internal
>>>> shielding and so the cabinet is an integral part of the shield, so
>>>> running it outside the cabinet is likely to result in some seriously
>>>> irritated neighbors.  It appears, though, that the final amplifier
>>>> section of the HX-10 is completely enclosed in its own shield and so
>>>> perhaps I can get away with it.
>>>>
>>>> Of course, the mounting holes on the sides of the Marauder panel
>>>> don't match up with a standard rack (why, oh WHY did they do that???)
>>>> but I guess that's nothing that a power drill and 10-32 tap (for the
>>>> rack, not for the Marauder panel) can't fix.
>>>>
>>>> Rick WA1RKT
>>>>
>>>>
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|               AM Amateur Radio Operator    NØDGN                 |
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| Bob Bethman                \\\|///     " The absence of a danger |
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