This I like!! Whar frequency? If we had the correct frequency, maybe we
would not need 1KW out.
Chris opr VE7HCB
At 10:49 AM 2001-12-05 -0600, bill thomas wrote:
>>From: w5kft@nts-online.net
>>To: Towertalk@contesting.com
>>Subject: [TowerTalk] Spurs and Harmonics new antenna
To: <towertalk@contesting.com>
>>Date: Wed, 5 Dec 2001 09:59:54 -0600
>>
>>
>>
>> I installed a new 75 meter delta loop on Tuesday. Its 265 feet
>>total length, cut for 3.795 khz. SWR is acceptable, less than 2.0
>>to 1 on that freq.
>>
>> Problem is that when using this antenna I have a spur or
>>harmonic every 10 khz across the 75 meter band. All the way from
>>3500 up to 4000 the spur can be heard every 10 khz starting
>>exactly on 3.500, in the DX window 3770-3780-3790-3800 the
>>sput peaks at about 30 db over S9. All connections on the
>>antenna, coax and fittings check solid.
>>
>> The delta loop is hung from the top of a 80 foot tower that also
>>has a HyGain TH11 and Cushcraft 402CD on it.
>>
>> Weird thing is that if I key the transceiver (TS-940SAT) the spur
>>will go away for about 2 seconds and then returns again.
>>
>> OK you list guru's.....what are your ideas and suggestions, this
>>one has me stumped. Any suggestions on how to find the source
>>and cure this problem would sure be appreciated....
>>
>>Bryan W5KFT
>
>I think you have something very nearby, perhaps in your own house, that is
>emitting the spurs. Perhaps it's a television or computer monitor or God
>knows what. As for transmitting and disrupting the source, I had a
>similar experience. A few years ago I had a neighbor who had a touch lamp
>that caused me grief with the noise that it emitted. I found that if I
>keyed the transmitter at about a KW it would disappear. I was actually
>turning it off with my signal. A month went by, and then I never heard it
>again. They got rid of it. I wonder why? Good luck.
>
>Bill K1XT
>
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