Above is another view of Mr Blackham's unusual Nagra SNN. As far as I can see, apart from not having
- j( w8 W( @# [" r3 q! e3 athe various anodised legends on the deck plate, also absent are the adjustable AGC threshold knob and
# h4 w/ f4 E8 ~! Q$ F* m6 Sthe transport lock-out 'switch' next to the meter. The cover 'hinge' arrangement differs slightly from later
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machines, as does the 'patina' of the anodised finish. A most interesting version, has anyone got another?
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(Apparently yes, I have recently been advised.)
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Click on either of the above images for more information.
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* For those who are looking at the stereo versions of this recorder often to be found on 'Eday', do
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There are now apparently four versions of the Nagra 'SN':
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Nagra SNN - full track recording at 3 3/4 and 1 7/8 i.p.s. - high quality recording in Mono
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Nagra SNS - half track recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Mono
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Nagra SNST - Stereo recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Stereo
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5 B; L& T n; y jNagra SNSTR (recent) - Stereo recording at 3 3/4 and 1 7/8 i.p.s. - high quality recording in Stereo
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Apparently for covert surveillance use it was preferable to have two separate recording channels to
3 H/ B/ }' k7 Z. @have some chance of capturing a muffled or distant conversations. So these older stereo machines will
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optimized for speech recording only, and will also
run at low speed for maximum
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recording time and not fidelity. Actually Nagra made a special playback loudspeaker system (25100
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DSP) with built in equalization to compensate for the quite limited frequency response of these
7 ^" R, X! \6 ?! \2 Erecorders. A standard mono Nagra SNN running at 3 and 3/4, like the ones on this page are capable of
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truly Hi-Fi recording, but
the slow speed SNS and the SNST stereo versions are not. Perhaps it might
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be possible to convert these machines for Hi-Fi use, but this would involve replacing most of the
8 v0 \/ N" g8 C3 belectronics and be very expensive.
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Cheaper to buy a rather bette
r stereo
IV-S in the first place!
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Tape for the Nagra SN
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" F" Y1 b9 i- {% D3 N: eI have been amazed at the prices some people have been willing to pay on that wild west auction site for
& ]" C# F& \: q' Y; J z+ Sthe little reels of tape for this machine. When I first acquired my example from the BBC naturally I
! Z$ ^! W, k, ^, jwanted to play with it and make some recordings. I knew that the tape was basically re-reeled cassette
+ H* M% h% R1 e' {5 s) i: [) x$ gtape so I approached a tape duplication house in the UK and quite easily obtained a few part used
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'pancakes'. These are the un-flanged bulk reels of tape (about 10" dia) that are automatically wound into
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the cassette shells. I then contacted Nagra UK (always helpful) and obtained for around ?5 each
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several pairs of empty plastic reels. It then was quite a simple matter to wind tape off the pancake and
9 ?* F3 B* S; m8 x: Y& i" i3 @onto the Nagra plastic reel (by using the hand crank on the machine). I did this a few years ago and
1 \3 E# m7 k% K6 E$ Othings may be slightly different these days, but perhaps worth investigating rather than spending some
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VERY silly money.
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