I had the same experience here with a 136 foot 80 - 10 meter off center 
fed dipole.

While I  found it easy to install, and liked the  multi band 
performance, it did cause my Tokyo Hi Power solid state amp to go into 
protection  mode, mostly on 80, and sometimes on 40 meters.


Adding a coax choke at the feedpoint seemed to solve the problem, but I 
also added ferrites on everything going in and out of the amp: coax, 
control cables, and AC power.

While I did like the antenna (and still have it for emergency set up if 
needed),  it did have some limitations for me.   Since it works on 
harmonics, both 30 and 15 meters are  not in that harmonic range.  Also 
I wanted to get into 160 meters.  You can use a tuner on 30 and 15, but 
not very efficient.   There are also mods to ad a parallel wire for 30 
and 15, and a mod to  add length to one end and get 160, but I just went 
a different route instead.

I'm sure in Fred's case, it will work just fine, and since he already 
has it,  I'd just put it up and enjoy it.

73, Steve KW3A
On 3/1/2015 9:57 PM, Rob wrote:
> Yeah Butch, that seems to be the consensus on the Tower Talk listserve.
> It's a relatively good performing antenna but because of its inherently
> off balance design, usually generates large common mode currents and
> that creates unwanted RF into the shack. You can help to mitigate this
> with a properly design multi-core choke and because of the large
> impedeance required by that choke, they will saturate at high power and
> burn up so that antenna is best suited for low power applications.
>
> Rob  K6DQ
>
> On 3/1/2015 6:33 PM, Butch Bussen wrote:
>> I've used these off and on over the years.  They are more suseptablde to
>> rf in the shack. At least in my experience.  I had one up for 160 through
>> ten fried the ballon last summer with my alpha, but I could never get the
>> swr down on 160, no matter what I did.  It worked fine on 75, but on 40,
>> same high swr problem.  It was resonant at around 1700 kc and nothing I
>> did, shortening both ends didn't change much.  It is worth a try and a
>> good compromise antenna for all bands.
>> 73
>> Butch
>> WA0VJR
>> Node 3148
>> Wallace, ks.
>>
>
>
>