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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Weaver\s+Modulator\s+with\s+Spectrum\s+Lab\s*$/: 6 ]

Total 6 documents matching your query.

1. LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Warren Ziegler <>
Date: Thu, 14 Apr 2016 12:47:35 -0400
Hello the list... Has anyone attempted to do a Weaver modulator to generate a baseband ssb signal in Spectrum Laboratory? Looks like it should be possible... -- 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XE
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00176.html (9,490 bytes)

2. Re: LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Wolfgang Büscher <>
Date: Thu, 14 Apr 2016 19:27:57 +0200
Hi Warren, It's not strictly the Weaver method but there is an SSB 'up-converter' with I and Q outputs in SL. It actually uses a forward and inverse FFT, and cos^2 windowing (with 50 percent overlap)
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00177.html (9,993 bytes)

3. Re: LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Andy Talbot <>
Date: Thu, 14 Apr 2016 18:54:24 +0100
That seems a very convoluted (!!) way of doing what is actually quite a simple process. Input low-pass filter,  I/Q mix with a centre tone, low pass filter the output- and there's the baseband signal
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00178.html (11,921 bytes)

4. Re: LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Wolfgang Büscher <>
Date: Thu, 14 Apr 2016 20:29:38 +0200
Well the main purpose of the filter is filtering. Letting it produce an I/Q output is more or less a by-product, and it works extremely well. Am 14.04.2016 um 19:54 schrieb Andy Talbot: That seems a
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00179.html (9,909 bytes)

5. Re: LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Andy Talbot <>
Date: Thu, 14 Apr 2016 19:43:39 +0100
It's not a Weaver modulator, but G3PLX's SDR transmitter that generates I/Q outputs from a soundcard and also, in a very clever way, allows FM and AM to be generated when no DC component is present. 
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00180.html (11,471 bytes)

6. Re: LF: Weaver Modulator with Spectrum Lab (score: 1)
Author: Warren Ziegler <>
Date: Fri, 15 Apr 2016 07:48:54 -0400
Wolf, Andy, Many thanks for the information! Yes a single chip ssb baseband generator would be very cool indeed! 73 Warren -- 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XEB/2 WE2XGR/1
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00194.html (11,778 bytes)


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