Above is another view of Mr Blackham's unusual Nagra SNN. As far as I can see, apart from not having
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the 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
5 ], {% d" M ~ k& y# W) ^9 v( Bmachines, as does the 'patina' of the anodised finish. A most interesting version, has anyone got another?
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8 C9 r8 D5 |( m$ h5 |(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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3 }; w3 S% _0 ]" ~9 l( |1 UNagra SNN - full track recording at 3 3/4 and 1 7/8 i.p.s. - high quality recording in Mono
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) ^! {1 j) e, B+ @( F3 p$ QNagra SNS - half track recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Mono
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* z3 m& N, I$ O$ \9 KNagra SNST - Stereo recording at 1 7/8 and 15/16 i.p.s. - surveillance quality recording in Stereo
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Nagra SNSTR (recent) - Stereo recording at 3 3/4 and 1 7/8 i.p.s. - high quality recording in Stereo
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, b5 D3 v! Q( WApparently 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
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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
( P9 q7 P& N: |4 }& P; TDSP) with built in equalization to compensate for the quite limited frequency response of these
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recorders. 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
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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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: F9 i" x( [* _, T' {7 _Tape for the Nagra SN
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I have been amazed at the prices some people have been willing to pay on that wild west auction site for
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the little reels of tape for this machine. When I first acquired my example from the BBC naturally I
8 t" a$ U1 J/ ~* @& kwanted 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
, h! h% H* \' \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
4 \2 x! y' {. h% ^) l0 yonto the Nagra plastic reel (by using the hand crank on the machine). I did this a few years ago and
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things 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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