[R-390] R-390 Digest, Vol 104, Issue 33
Don Reaves
donreaves at gmail.com
Tue Dec 18 12:06:56 EST 2012
http://r-390a.net/ST-32-152.pdf
On Tue, Dec 18, 2012 at 10:27 AM, Mack McCormick <w4ax.mack at gmail.com>wrote:
> 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:
>
> > Send R-390 mailing list submissions to
> > r-390 at mailman.qth.net
> >
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> > or, via email, send a message with subject or body 'help' to
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> >
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> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of R-390 digest..."
> >
> >
> > 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
> ______________________________________________________________
> 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
>
--
--
Don Reaves W5OR WD2XSH/15
8101 Barrett Rd. Roland AR 72135
VOIP landline: 501.420.3661
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