To: | <amps@contesting.com> |
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Subject: | [AMPS] IMD |
From: | Mike" <W4EF@dellroy.com (Mike) |
Date: | Tue, 18 Sep 2001 18:24:11 -0700 |
Has anyone had any luck using receiver feeding a soundcard in conjunction with a program like Spectrum Lab to resolve the closely spaced IM sidebands from a PA? Mike, W4EF........... ----- Original Message ----- From: "Peter Chadwick" <Peter.Chadwick@zarlink.com> To: <amps@contesting.com>; <ilkka.kontola@nokia.com> Sent: Tuesday, September 18, 2001 5:53 AM Subject: RE: [AMPS] IMD > > > >> We have to remember a two-tone test does not show IMD caused > >> by poor dynamic power supply regulation. > > > According to Pappenfus, a test with very closely spaced tones (<50Hz) will do > it > - but you need a spectrum analyser with very good resolution. > > 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 |
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