[Elecraft] Receiver Damage from another Close Station?
John Ragle
tpcj1r03 at crocker.com
Wed Mar 2 21:36:29 EST 2011
Second to that concern. I burned up the 2 meter GaAsFET preamp/relay in
my TE Systems amp while running my 6 meter amp to its Yagi on the same
Christmas tree.
John Ragle -- W1ZI
=====
On 3/2/2011 9:29 PM, Jim McDonald wrote:
> Before I got my K3 I had a ham move in 1000' from my antenna, and I wasn't
> pleased. In my previous location in AZ, I was 1700' from a ham too.
>
> In both cases, I used an ICE front-end saver, which is cheap insurance. See
> http://www.iceradioproducts.com/reconly.html#rflimiter .
>
> I used a Model 196, but I see they also have a model that includes a
> lightning arrestor / static drain, and another pair for 30-500 MHz.
>
> I'd like to hear from someone more technically qualified than I am (that
> means almost anyone) about the adequacy of the ICE units.
>
> My last neighbor was in a rental house. He moved out after a year, and I
> breathed a sigh of relief.
>
> Jim N7US
>
>
>
> -----Original Message-----
>
>
> Yes you should be concerned. I would think about bandpass filtering and
> probably disconnecting the K3 when not on the air. I was looking at the
> mods for the K3 and noticed one that addressed this issue.
>
> Are we talking city lot or 20 acre parcels?
>
> W0MU
>
> On 3/2/2011 6:38 PM, w0ih wrote:
>> My next door neighbor is a ham and recently upgraded to a Icom 7700, 200
>> watt.
>>
>> The antennas for my K3 are pretty close to his. I have a set of dipoles
>> (160, 75, 60 that share a common feedline) that are about 30 feet off one
>> leg from the neighbor's HyTower (75 thru 10 full size vertical). I have a
>> TH11DX up at 50 feet (boom is loaded for 40 meters also, separate
> feedline)
>> and he has a TH5DX at very close to the same level, directly east of my
>> tower, about 100 feet away.
>>
>> I have a Heathkit SB 220 amp (2 kw input?). Neighbor runs barefoot for
> now.
>> So, my question is, do I need to be concerned about damage to either rig?
>> I'm assuming that we can't operate the same bands at the same time. Our
>> operating schedules seem to be very different for now. But I'm wondering
> if
>> there could be input damage from one operating on any band, even if the
> rig
>> is off.
>>
>> I was wondering if the K3 input is grounded through a relay when turned
> off,
>> and similarly on the 7700.
>>
>> Any thoughts?
>>
>> Mike
>
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