[Hammarlund] Hammarlund Digest, Vol 111, Issue 5

Mon Apr 8 11:03:15 EDT 2013

Wes- Although you MAY get results with this set-up, personally, I would not trust it. You didn't mention the brand / quality of your digital radio, but experiences with digital devices in general have shown them to be NOT reliable as to absolute calibration. In other words, just because the display is digital, does NOT mean that what you are seeing is really what you are getting. See if you can beg, borrow, or steal a REAL signal generator. Suggestions would include the General Radio 1001, the Hewlett packard 606 A/B, (both pretty good, but you will need a counter), the HP 8640-B (excellent) or the Boonton 102-F (also excellent). The latter two are phase-locked loop instruments, contain their own counters, and will NOT drift. I assume that you have a manual for your SP-600 that contains the procedure. If not, you will need to find this information somewhere. This is an easy radio to align, but the results will defenitely depend on the quality of your signal gen. Depending on your interest, and future needs, you might purchase one of these generators for your bench. If you plan to mess around with radios- maybe rebuild a few more SP-600s for some friends, a good (real) signal gen will be one of your best investments.ChuckN1LNH

> Date: Sun, 7 Apr 2013 16:22:18 -0700
> From: k5apl at yahoo.com
> To: hammarlund at mailman.qth.net
> Subject: Re: [Hammarlund] Hammarlund Digest, Vol 111, Issue 5
> 
> 
> 
> Thanks for the good advice.  Chuck, I am running it all day long as we speak.  No funny noises or glitches yet.  I have an old Signal Generator,
> but also a digital radio that can act as a frequency counter so think I'll be OK.  If not, I can borrow an IFR 1200S monitor as last resort.  It sure
> works well.....no idea the last time it was aligned (or turned on, for that matter).  One step at a time.
> Wes
>  
> 
> ________________________________
>  From: "hammarlund-request at mailman.qth.net" <hammarlund-request at mailman.qth.net>
> To: hammarlund at mailman.qth.net 
> Sent: Sunday, April 7, 2013 11:00 AM
> Subject: Hammarlund Digest, Vol 111, Issue 5
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> Today's Topics:
> 
>    1. It Works (Charles Ochs)
>    2. Re: It Works! (Al Parker)
>    3. Re: It Works! (Joe Connor)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 6 Apr 2013 12:40:00 -0400
> From: Charles Ochs <chuckochs at hotmail.com>
> To: "hammarlund at mailman.qth.net" <hammarlund at mailman.qth.net>
> Subject: [Hammarlund] It Works
> Message-ID: <SNT133-W4193A215AFD70B9EBEFE3AAEDB0 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Very good! Not the easiest radio to rebuild, but not the nightmare of an SX-28 or even an SX-62.  This is a very easy receiver to align. You need a decent signal generator, NOT one of those crappy "service oscillators". If you don't have one of the newer "phased locked" generators, make sure you use a frequency counter to monitor the (always) drifting that will happen with "older tech" types. AND- listen to your radio for a couple of days before you do this. Every now and then, tap the thing gently all over with something like a plastic screw driver handle,and listen for pops, clicks, or other strange noises. Invistigate and cure any of those before going on to the alignment process. I have adopted this plan over many years, and always do it this way. Allows time for all those new tubes, capacitors, resistors, not to mention solder joints, to "burn in" and get used to working as a team.These are truely great radios. I have had mine for over 20 years,
>  and once it was "commisio
> ned" it has been flawless in its operation.ChuckN1LNH                           
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 06 Apr 2013 12:58:51 -0400
> From: Al Parker <anchor at ec.rr.com>
> To: Wes Bolin <k5apl at yahoo.com>
> Cc: "hammarlund at mailman.qth.net" <hammarlund at mailman.qth.net>
> Subject: Re: [Hammarlund] It Works!
> Message-ID: <5160544B.9070501 at ec.rr.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Hi Wes,
>     Congrats, good work.  Chuck brings up a good point, use it for a week 
> or so before doing the alignment. Leave it on overnite once or twice to 
> help, but put it thru several cycles of getting fully up to temp and 
> cooling off.
>     Did you get a coupler for your BFO shaft?  If not, I'll take a look 
> here, I may have a good one.
> 73,
> 
> Al, W8UT
> http://www.boatanchors.org/
> http://www.hammarlund.info/
> 
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
> 
> On 4/6/2013 11:38 AM, Wes Bolin wrote:
> > Just fired up my SP600JX26 after cleaning, recapping, repainting front panel, etc, etc, etc.
> > It Works!
> > Now to tweak its alignment.  First though, I just want to sit back and listen for a while.
> > Wes
> > ______________________________________________________________
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Sat, 6 Apr 2013 10:31:55 -0700 (PDT)
> From: Joe Connor <joeconnor53 at yahoo.com>
> To: Wes Bolin <k5apl at yahoo.com>,    "hammarlund at mailman.qth.net"
>     <hammarlund at mailman.qth.net>
> Subject: Re: [Hammarlund] It Works!
> Message-ID:
>     <1365269515.68856.YahooMailNeo at web125502.mail.ne1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
> 
> Does anything feel better than firing up a set after a full recapping and having it work the first time? Congratulations, Wes. Enjoy that receiver to the fullest!
> 
> ? ? ? ? ? ? ? ? ? ?Joe Connor
> 
> 
> 
> >________________________________
> > From: Wes Bolin <k5apl at yahoo.com>
> >To: "hammarlund at mailman.qth.net" <hammarlund at mailman.qth.net> 
> >Sent: Saturday, April 6, 2013 11:38 AM
> >Subject: [Hammarlund] It Works!
> > 
> >Just fired up my SP600JX26 after cleaning, recapping, repainting front panel, etc, etc, etc.
> >It Works!
> >Now to tweak its alignment.? First though, I just want to sit back and listen for a while.
> >Wes
> >______________________________________________________________
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> End of Hammarlund Digest, Vol 111, Issue 5
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