[cma-l] NTP 535-300 TBU Manual request

[Alex Gray, Two Lochs Radio]

Serge

 

In case it helps, the phone connection on single channel units was done via the 9-pin D-type connector which is usually:

 

Pins 1 + 2 = Telephone handset
Pin 3 NC

Pins 4 + 5 = Exchange line
Pin 6-9 = NC

 

As yours is dual, maybe it has two 9-pin connectors, or maybe it uses the NC pins on the same connector, But don’t blame me if it turns out to be non-standard! Maybe opening it up and inspecting the wiring would give the game away!

 

I know it’s a long obsolete product, but have you tried asking NTP themselves in case they have an archive?

 

NTP Technology A/S • Nybrovej 99 • DK-2820 Gentofte • Denmark

 • Phone: +45 45 96 88 80 • Fax: +45 44 53 11 70 • Email:  <mailto:ntp at ntp.dk> ntp at ntp.dk

 

Otherwise, Gyraf, who has some info on historic products might (only might!) be able to help. http://www.gyraf.dk/

 

Alex

Two Lochs Radio 

 

Wester Ross Radio Ltd
Serving the communities of Wester Ross as Two Lochs Radio and Lochbroom FM 

  _____  

•  96.8, 102.2, 106.0 & 106.6 FM  
•  Online at www.2LR.co.uk, UK Radioplayer or TuneIn apps.  
•  Listen live by phone on +44 330 998 1114 (UK) or 518 500 1063 (US) 

  _____  

 

From: cma-l-bounces at mailman.commedia.org.uk [mailto:cma-l-bounces at mailman.commedia.org.uk] On Behalf Of Serge
Sent: 02 February 2016 13:42
To: cma-l at mailman.commedia.org.uk
Subject: [cma-l] NTP 535-300 TBU Manual request

 

I'm hoping someone can help me:-

 

We recently obtained an NTP 535-300 TBU, but it came without manual. It is a two-line telephone hybrid but with no front panel controls, everything seems to be through two large multiway connector, no XLR ins or outs or separate remote connector.  

 

Does anyone have a manual for this unit? It's beautifully built, and we would very much like to use it, but without some documentation, that may not be possible.

 

I've seen from an on-line auction that one or more were sold from the dispersal of stuff from the BBC World Service at Bush House, so they were used in the UK, and hopefully some collector might have a manual.

 

In hope,

 

Best regards

 

Serge Auckland

 

RWSfm 103.3

 

 



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