Above is another view of Mr Blackham's unusual Nagra SNN. As far as I can see, apart from not having
8 x" M4 x/ n/ O4 q, v% xthe various anodised legends on the deck plate, also absent are the adjustable AGC threshold knob and
5 a2 U+ {5 ]- M' H& F2 lthe 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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" K7 _- v% `- m/ w( f6 ~3 M7 ^5 s* For those who are looking at the stereo versions of this recorder often to be found on 'Eday', do
+ z2 v% B( N6 F& M3 obeware, 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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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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& W3 ]) A5 R# `) J( r( I/ QNagra 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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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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Apparently for covert surveillance use it was preferable to have two separate recording channels to
+ [ s1 W# U) |; W3 m" B7 s- [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
, F* w' n [; M7 n5 C! G/ ]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
3 r7 G, [' y; N7 E1 A7 [/ z3 Eelectronics 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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6 O4 {! [2 d4 J# r: f5 mI have been amazed at the prices some people have been willing to pay on that wild west auction site for
5 c. A, e+ ~9 l; j2 k( Athe 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
/ _6 t7 }* b B6 pthe 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
( E- V- T' ~" _4 @9 monto 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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