Above is another view of Mr Blackham's unusual Nagra SNN. As far as I can see, apart from not having
+ r W+ V' b) C: Othe various anodised legends on the deck plate, also absent are the adjustable AGC threshold knob and
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the 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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6 ^' _# {% W. u4 ~7 j(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
! z6 v. x. y7 V: s" F9 |2 t/ \! Zbeware, as It is unlikely that these will be the recent versions designed to record high quality music.
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There are now apparently four versions of the Nagra 'SN':
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* L4 e6 @/ [: G) ?4 P" QNagra SNN - full track recording at 3 3/4 and 1 7/8 i.p.s. - high quality recording in Mono
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$ T- }0 \7 K( f1 V$ Q0 E! vNagra SNS - half track recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Mono
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+ t. }$ |# G+ NNagra SNST - Stereo recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Stereo
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; H% ~( Z$ O) W$ x* oNagra 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
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have some chance of capturing a muffled or distant conversations. So these older stereo machines will
/ P+ t! U8 ~9 i! |# ltherefore be
optimized for speech recording only, and will also
run at low speed for maximum
) o# t' h% X/ v+ }# G+ Crecording 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
; R S# i$ i$ x0 @! trecorders. A standard mono Nagra SNN running at 3 and 3/4, like the ones on this page are capable of
& J% L% D- C5 t$ W O# Htruly 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
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electronics 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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! r8 y; b& B. R$ Q$ d9 jI have been amazed at the prices some people have been willing to pay on that wild west auction site for
/ W9 V4 C; r5 S' mthe little reels of tape for this machine. When I first acquired my example from the BBC naturally I
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wanted to play with it and make some recordings. I knew that the tape was basically re-reeled cassette
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tape 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
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onto the Nagra plastic reel (by using the hand crank on the machine). I did this a few years ago and
& y$ G% t% l! M" c" b. 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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