[Amps] Why hasn't solid state replaced tubes?

[Bill Fuqua]

Correct, that is why they use high level RF two-tone generators for linear 
amplifier linearity test.

73
Bill wa4lav


At 07:54 PM 3/6/2003 -0500, Gary Schafer wrote:


>Tom Rauch wrote:
>>>Probably the simplest and most repeatable way to monitor inter mod is to
>>>just switch your receiver to the opposite side band. Im products are
>>>going to fall on the opposite side band as well as on the wanted side
>>>band. On the opposite side band you don't have the wanted signal
>>>components to interfere with hearing the IM products.
>>
>>IM products are not symmetrically dispersed Gary. Where they are USB or LSB
>>depends on relative level (and I would guess phase, I need to think about
>>that) of the original frequencies.
>>73 Tom
>>
>
>Hi Tom,
>
>If IM products are generated at RF (after filters) I don't think that 
>there is a difference. Each signal should modulate the other equally. If 
>some of the products are being generated at lower levels in the 
>transmitter then I could see where there would be some difference. I know 
>that there are phase modulation products associated with an SSB signal but 
>I had never thought of it as having any effect on IM products.
>
>73
>Gary  K4FMX
>
>
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