[R-390] R-390 Digest, Vol 104, Issue 33
Mack McCormick
w4ax.mack at gmail.com
Tue Dec 18 11:27:05 EST 2012
I get the error of page not found at
http://www.radioera.com/cds-info.htm . Army
Security Agency Training Center Manual
ST-32-151,<http://www.radioera.com/cds-info.htm>"Visual
Alignment of Radio Receivers R-390/URR and R-390A/URR" (Available on the
Radio Era Archives CD). Does anyone have the actual document or can you
provide a link?
Thanks,
Mack
W4AX
On Tue, Dec 18, 2012 at 11:12 AM, <r-390-request at mailman.qth.net> wrote:
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> Today's Topics:
>
> 1. Alignment of the Mechanical Filters and IF with a Spectrum
> Analyzer (chuck.rippel at cox.net)
> 2. Re: Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer (Leigh)
> 3. Re: Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer (Mack McCormick)
> 4. Re: Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer (Leigh)
> 5. Re: Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer (Roy Morgan)
> 6. Re: Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer (Leigh)
> 7. Re: Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer (Ted Breaux)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 17 Dec 2012 18:36:40 +0000 (GMT)
> From: chuck.rippel at cox.net
> To: r-390 at mailman.qth.net
> Subject: [R-390] Alignment of the Mechanical Filters and IF with a
> Spectrum Analyzer
> Message-ID: <1d14da5.93b.13baa274e2f.Webtop.0 at cox.net>
> Content-Type: text/plain; charset=UTF-8; format=flowed; delsp=no
>
> I have a very nice Tektronix 2712 here. The short answer is yes, you
> can adjust the trimmers to minimize ripple in the passband of the
> mechanical filters. However, that comes at the cost of an input output
> mismatch @ 455kc and the filter exhibiting some loss. In the receivers
> I experimented with, the return was barely noticeable and not worth the
> loss. I stick with injecting exactly 455 kc and peaking each filter and
> T-503 only VIA a VTVM connected to the Diode Load. The other 2
> transformers accommodate the 16 kc bandwidth for MUX. As long as they
> have not been diddled with, are usually fine although there is a
> procedure for aligning them. That alignment is very broad.
>
> A spectrum Analyzer and tracking generator would absolutely be the
> preferred method to align the IF in an R390 or SP-600.
>
> ---
> No trees were killed to deliver this message. However, a large number
> of electrons were terribly inconvenienced.
>
> Chuck Rippel
>
>
>
>
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Thu, 13 Dec 2012 12:07:17 -0500
> > From: Mack McCormick <w4ax.mack at gmail.com>
> > To: R-390 Group <R-390 at mailman.qth.net>
> > Subject: [R-390] Alignment of the Mechanical Filters and IF with a
> > Spectrum Analyzer
> > Message-ID:
> > <
> CAFzyUt60QdpznMU6EpLP1HPAp1A5XWCGGrcmMxh_QPO5uhsrPg at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > I have a calibrated high quality spectrum analyzer and tracking
> > generator.
> > Does anyone have experience with using a spectrum analyzer to:
> >
> > 1) *Adjust the mechanical filters? *There is some literature that
> > suggests
> > just peaking for noise can adversely affect the filter skirts.
> >
> > 2) *Stagger tune the IF?* My thought is that you could look at the
> > overall
> > spectrum of the IF and make optimal adjustments.
> >
> > I would of course make sure that I don't load the circuit with the
> > spectrum
> > analyzer to skew the results.
> >
> > Does anyone have any experience or suggestions?
> >
> > --
> > 73,
> >
> > Mack de W4AX
> > http://w4ax.com
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 17 Dec 2012 14:17:31 -0800
> From: "Leigh" <bipi at comcast.net>
> To: "Mack McCormick" <w4ax.mack at gmail.com>, "R-390 Group"
> <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
> Message-ID: <AF655BCDAC5A49EEBB10A56BA29F260F at K7PI>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Mack,
>
> I have a document, ST 32 - 152, "Visual Alignment of Radio Receivers,
> R-390/URR and R-390A/URR", dated March 1969, US Army Intelligence School,
> Fort Devens, MA. This document describes stagger tuning the IF chain, in
> general and for the R-390 and R-390A. The procedure uses a sweep generator
> and scope but the same procedure holds (in fact is easier) with a spectrum
> analyzer and tracking generator.
>
> I will take it to work with me tomorrow, scan it, and send you (and anyone
> else) who may want a copy of it.
>
> Happy Trails
>
> de Mike
> K7PI
> Mercer Island, WA
>
> ----- Original Message -----
> From: "Mack McCormick" <w4ax.mack at gmail.com>
> To: "R-390 Group" <R-390 at mailman.qth.net>
> Sent: Thursday, December 13, 2012 9:07 AM
> Subject: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
>
>
> >I have a calibrated high quality spectrum analyzer and tracking generator.
> > Does anyone have experience with using a spectrum analyzer to:
> >
> > 1) *Adjust the mechanical filters? *There is some literature that
> suggests
> > just peaking for noise can adversely affect the filter skirts.
> >
> > 2) *Stagger tune the IF?* My thought is that you could look at the
> overall
> > spectrum of the IF and make optimal adjustments.
> >
> > I would of course make sure that I don't load the circuit with the
> > spectrum
> > analyzer to skew the results.
> >
> > Does anyone have any experience or suggestions?
> >
> > --
> > 73,
> >
> > Mack de W4AX
> > http://w4ax.com
> > ______________________________________________________________
> > R-390 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-390
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:R-390 at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 17 Dec 2012 17:18:36 -0500
> From: Mack McCormick <w4ax.mack at gmail.com>
> To: Leigh <bipi at comcast.net>
> Cc: R-390 Group <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
> Message-ID:
> <CAFzyUt6fVF3mv6BjkVx=_-
> K8sk4gcAa3zKEEh_r5iTvqSDEfaw at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Mike,
>
> Thank you! That will be great!
>
> BTW, I lived in Edmonds for seven years and really miss the area. Mercer
> Island is absolutely fantastic.
>
> Mack
>
>
> On Mon, Dec 17, 2012 at 5:17 PM, Leigh <bipi at comcast.net> wrote:
>
> > Mack,
> >
> > I have a document, ST 32 - 152, "Visual Alignment of Radio Receivers,
> > R-390/URR and R-390A/URR", dated March 1969, US Army Intelligence School,
> > Fort Devens, MA. This document describes stagger tuning the IF chain, in
> > general and for the R-390 and R-390A. The procedure uses a sweep
> generator
> > and scope but the same procedure holds (in fact is easier) with a
> spectrum
> > analyzer and tracking generator.
> >
> > I will take it to work with me tomorrow, scan it, and send you (and
> anyone
> > else) who may want a copy of it.
> >
> > Happy Trails
> >
> > de Mike
> > K7PI
> > Mercer Island, WA
> >
> > ----- Original Message ----- From: "Mack McCormick" <w4ax.mack at gmail.com
> >
> > To: "R-390 Group" <R-390 at mailman.qth.net>
> > Sent: Thursday, December 13, 2012 9:07 AM
> >
> > Subject: [R-390] Alignment of the Mechanical Filters and IF with a
> > SpectrumAnalyzer
> >
> >
> > I have a calibrated high quality spectrum analyzer and tracking
> generator.
> >> Does anyone have experience with using a spectrum analyzer to:
> >>
> >> 1) *Adjust the mechanical filters? *There is some literature that
> suggests
> >>
> >> just peaking for noise can adversely affect the filter skirts.
> >>
> >> 2) *Stagger tune the IF?* My thought is that you could look at the
> overall
> >>
> >> spectrum of the IF and make optimal adjustments.
> >>
> >> I would of course make sure that I don't load the circuit with the
> >> spectrum
> >> analyzer to skew the results.
> >>
> >> Does anyone have any experience or suggestions?
> >>
> >> --
> >> 73,
> >>
> >> Mack de W4AX
> >> http://w4ax.com
> >> ______________________________**______________________________**__
> >> R-390 mailing list
> >> Home: http://mailman.qth.net/**mailman/listinfo/r-390<
> http://mailman.qth.net/mailman/listinfo/r-390>
> >> Help: http://mailman.qth.net/mmfaq.**htm<
> http://mailman.qth.net/mmfaq.htm>
> >> Post: mailto:R-390 at mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >>
> >
> >
>
>
> --
> 73,
>
> Mack de W4AX
> http://w4ax.com
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 17 Dec 2012 17:22:37 -0800
> From: "Leigh" <bipi at comcast.net>
> To: "R-390 Group" <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer
> Message-ID: <D58A910F2C4544CC98E08CFB91428EC5 at K7PI>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Too many requests to reply individually....will send out to all who have
> (or
> will request) or if too many, will post the PDF on my Web site. Nice to
> see
> the interest.
>
> Mike
> K7PI
>
> ----- Original Message -----
> From: "Leigh" <bipi at comcast.net>
> To: "Mack McCormick" <w4ax.mack at gmail.com>; "R-390 Group"
> <R-390 at mailman.qth.net>
> Sent: Monday, December 17, 2012 2:17 PM
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer
>
>
> > Mack,
> >
> > I have a document, ST 32 - 152, "Visual Alignment of Radio Receivers,
> > R-390/URR and R-390A/URR", dated March 1969, US Army Intelligence School,
> > Fort Devens, MA. This document describes stagger tuning the IF chain, in
> > general and for the R-390 and R-390A. The procedure uses a sweep
> > generator and scope but the same procedure holds (in fact is easier) with
> > a spectrum analyzer and tracking generator.
> >
> > I will take it to work with me tomorrow, scan it, and send you (and
> anyone
> > else) who may want a copy of it.
> >
> > Happy Trails
> >
> > de Mike
> > K7PI
> > Mercer Island, WA
> >
> > ----- Original Message -----
> > From: "Mack McCormick" <w4ax.mack at gmail.com>
> > To: "R-390 Group" <R-390 at mailman.qth.net>
> > Sent: Thursday, December 13, 2012 9:07 AM
> > Subject: [R-390] Alignment of the Mechanical Filters and IF with a
> > SpectrumAnalyzer
> >
> >
> >>I have a calibrated high quality spectrum analyzer and tracking
> generator.
> >> Does anyone have experience with using a spectrum analyzer to:
> >>
> >> 1) *Adjust the mechanical filters? *There is some literature that
> >> suggests
> >> just peaking for noise can adversely affect the filter skirts.
> >>
> >> 2) *Stagger tune the IF?* My thought is that you could look at the
> >> overall
> >> spectrum of the IF and make optimal adjustments.
> >>
> >> I would of course make sure that I don't load the circuit with the
> >> spectrum
> >> analyzer to skew the results.
> >>
> >> Does anyone have any experience or suggestions?
> >>
> >> --
> >> 73,
> >>
> >> Mack de W4AX
> >> http://w4ax.com
> >> ______________________________________________________________
> >> R-390 mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/r-390
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:R-390 at mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >
> > ______________________________________________________________
> > R-390 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-390
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:R-390 at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 5
> Date: Mon, 17 Dec 2012 22:29:27 -0500
> From: Roy Morgan <k1lky at earthlink.net>
> To: Leigh Sedgwick <bipi at comcast.net>, R-390 Group
> <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
> Message-ID: <B4BD8327-C946-4D40-ABED-E2916FDD72B3 at earthlink.net>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
>
> On Dec 17, 2012, at 5:17 PM, Leigh wrote:
>
> > Mack,
> >
> > I have a document, ST 32 - 152, "Visual Alignment of Radio
> > Receivers, R-390/URR and R-390A/URR", dated March 1969, US Army
> > Intelligence School, Fort Devens, MA.
>
> Note:
>
> That document is in places very specific to the equipment used. In
> particular, it gives instructions on how to manage the sweep images
> from the sweep going "up" and then coming "down" in frequency.
>
> Many sweep generators nowadays (or even from some decades ago) have
> the equivalent of retrace blanking to eliminate the trouble of
> accounting for both up and down traces. With any of these systems,
> one important thing is to get the frequency sweep speed down low
> enough to avoid distortion in the picture you get.
>
> That document is online already:
> www.r-390a.net/faq-refs.htm
>
> Roy
>
>
> Roy Morgan
> k1lky at earthlink.net
> K1LKY Since 1958 - Keep 'em Glowing!
>
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 17 Dec 2012 21:09:56 -0800
> From: "Leigh" <bipi at comcast.net>
> To: "Roy Morgan" <k1lky at earthlink.net>, "R-390 Group"
> <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
> Message-ID: <80D85E6A862E4507B223CFA8171E275A at K7PI>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Hello Roy,
>
> Very good. I didn't realize it was already online. Guess it is covered
> then. Thanks for the information.
>
> 73 de Mike
> K7PI
>
> ----- Original Message -----
> From: "Roy Morgan" <k1lky at earthlink.net>
> To: "Leigh Sedgwick" <bipi at comcast.net>; "R-390 Group"
> <R-390 at mailman.qth.net>
> Sent: Monday, December 17, 2012 7:29 PM
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with a
> SpectrumAnalyzer
>
>
> >
> > On Dec 17, 2012, at 5:17 PM, Leigh wrote:
> >
> >> Mack,
> >>
> >> I have a document, ST 32 - 152, "Visual Alignment of Radio Receivers,
> >> R-390/URR and R-390A/URR", dated March 1969, US Army Intelligence
> >> School, Fort Devens, MA.
> >
> > Note:
> >
> > That document is in places very specific to the equipment used. In
> > particular, it gives instructions on how to manage the sweep images from
> > the sweep going "up" and then coming "down" in frequency.
> >
> > Many sweep generators nowadays (or even from some decades ago) have the
> > equivalent of retrace blanking to eliminate the trouble of accounting
> for
> > both up and down traces. With any of these systems, one important thing
> > is to get the frequency sweep speed down low enough to avoid distortion
> > in the picture you get.
> >
> > That document is online already:
> > www.r-390a.net/faq-refs.htm
> >
> > Roy
> >
> >
> > Roy Morgan
> > k1lky at earthlink.net
> > K1LKY Since 1958 - Keep 'em Glowing!
> >
> >
> >
>
>
>
> ------------------------------
>
> Message: 7
> Date: Tue, 18 Dec 2012 10:12:48 -0600
> From: "Ted Breaux" <tbreaux7 at comcast.net>
> To: "Roy Morgan" <k1lky at earthlink.net>, "Leigh Sedgwick"
> <bipi at comcast.net>, "R-390 Group" <R-390 at mailman.qth.net>
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer
> Message-ID: <3778771C92F345488EB8AFAB0180BDD9 at TMBPCPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Thanks for the info.
>
> ted b
> ----- Original Message -----
> From: "Roy Morgan" <k1lky at earthlink.net>
> To: "Leigh Sedgwick" <bipi at comcast.net>; "R-390 Group"
> <R-390 at mailman.qth.net>
> Sent: Monday, December 17, 2012 9:29 PM
> Subject: Re: [R-390] Alignment of the Mechanical Filters and IF with
> aSpectrumAnalyzer
>
>
> >
> > On Dec 17, 2012, at 5:17 PM, Leigh wrote:
> >
> >> Mack,
> >>
> >> I have a document, ST 32 - 152, "Visual Alignment of Radio Receivers,
> >> R-390/URR and R-390A/URR", dated March 1969, US Army Intelligence
> >> School, Fort Devens, MA.
> >
> > Note:
> >
> > That document is in places very specific to the equipment used. In
> > particular, it gives instructions on how to manage the sweep images from
> > the sweep going "up" and then coming "down" in frequency.
> >
> > Many sweep generators nowadays (or even from some decades ago) have the
> > equivalent of retrace blanking to eliminate the trouble of accounting
> for
> > both up and down traces. With any of these systems, one important thing
> > is to get the frequency sweep speed down low enough to avoid distortion
> > in the picture you get.
> >
> > That document is online already:
> > www.r-390a.net/faq-refs.htm
> >
> > Roy
> >
> >
> > Roy Morgan
> > k1lky at earthlink.net
> > K1LKY Since 1958 - Keep 'em Glowing!
> >
> >
> >
> > ______________________________________________________________
> > R-390 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-390
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:R-390 at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> _______________________________________________
> R-390 mailing list
> R-390 at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/r-390
>
>
> End of R-390 Digest, Vol 104, Issue 33
> **************************************
>
--
73,
Mack de W4AX
http://w4ax.com
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