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[TenTec] Scout,Omni,TS 850 transmit

To: <tentec@contesting.com>
Subject: [TenTec] Scout,Omni,TS 850 transmit
From: bstephens1@mindspring.com (robert k stephens)
Date: Sat, 24 Aug 2002 17:43:04 -0400
Given 50 watts output, and careful modulation, are the Scout's 3rd order
-25 and 5th order -35 sufficient for a clean signal ? 


p.s I was monitoring my signal on a Kenwood today and feel that the hand
mic is a bit bassy but not that is just taste. I was offered a loan of of a
ten tec wired D 104 and although I didn't have a chance to hear it myself
and did make a contact with it. The guy I contacted listened to the hand
mic and the D 104 and said the D 104 was *much better so if the bands
co-operate I'll try to have some fun with the D 104 and see how it does. I
understand a D 104 can easily overdrive a modern rig so I'll try to be
careful about that.

73
Bob KB1CIW


 At 09:43 AM 8/24/02 -0500, Dr. Gerald N. Johnson, electrical engineer wrote:
>Poor transmitter intermod is noticed first by users of adjacent
>frequencies as monkey chatter and splatter. IN the ault days of tube
>finals going for third order of -30 gave a super 5th order and the
>higher order intermod products were hard to find. Solid state finals
>tend to have much greater higher order intermod products that spread out
>much further across the bands. Add to that broadband noise from the
>amplifiers and the whole noise floor of the bands rise just due to less
>than perfect transmitters.
>
>When listening to the distorted signal, the receiver filter helps clean
>up some of the IMD products to make the signal sound better. That's why
>a scope on a receiver after the filter really tells little about the
>quality of the transmitted signal.
>
>73, Jerry, K0CQ
>
>-- 
>Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
>Reproduction by permission only.
>

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