I have a 2/3-tone af generator used for testing of SSB transmitters for sale
or swap
Anybody?
Hans SM5KI
----------
>Från: Peter Chadwick <Peter_Chadwick@mitel.com>
>Till: amps@contesting.com, "'Radio WC6W'" <wc6w@juno.com>
>Ämne: RE: [AMPS] Two Tone 2000
>Datum: tis 7 nov 2000 10.17
>
>
>Marv says:
>
> > Thanks in advance for your suggestions!
>
>
>It could be worthwhile having 3 tone testing available, with two of the tones
>100Hz apart. Not as good as 25 or 30 Hz apart, but does exercise the power
>supply in terms of its output impedance at low frequencies. A 2 tone test with
>very close spaced tones shows up interesting phenomena. It can be a bit limited
>in that you need a spectrum analyser with very good filters to see the IMD
>products.
>
>Similarly, 2 tones widely spaced can be useful in that IMD from the AF and
>balanced modulator stages fall outside the sideband filter passband.
>
>73
>
>Peter G3RZP
>
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
>
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|