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Ashley Booth

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  • Location
    Windsor, UK
  • About
    Nagra service engineer 1969-74. Have a collection of 19 Nagras.
  • Interested in Sound for Picture
    Not Applicable

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  1. Why do people call the Nagra charger an ATN-ATU? It's a PAR. The ATN -ATU writing on the unit shows where you plug in the ATN or ATU.
  2. Look on the Nagra R2R recorders group on Facebook. Ronald Steenhart is selling it.
  3. Has anyone got a good copy of the later Nagra III circuit diagram? This is the model with the black erase head. You can tell if it's the later model circuit as the bias oscillator transformer has taps on it to adjust bias level. All I have is a low resolution copy in a pdf. There are loads of copies on the web in various languages but cannot find one of the newer model.
  4. Adjusting the record level and frequency response is just changing resistors and capacitors - no special parts. Adjusting the bias on old machines (ones with a gray erase head) is by changing the value of a capacitor. On newer III's (with a black erase head) the bias is adjusted by changing taps on the bias transformer. If the record level is correct and it has a good record frequency response then it's probably set up for the tape you're using. Some techs mark the tape type inside the machine if it's been changed from the standard tape. I can't remember doing that myself!
  5. Both the bias and HF adjustments have to be made for each tape type. On the Nagra III this requires components to be changed.
  6. From the Nagra Audio FB group. Andy Neddermeyer's Nagra III, which got caught on the wrong side of the Mount Vision fire in Inverness Northern California which burned from October 3rd thru 16th, 1995......almost indestructible !
  7. Just had this email from Nagra: Dear Sir, Your request for the repair of your Nagra V has been forwarded to us. What you need is to get a new GAL programmed. As far as I understand, you would be able to change it yourself ? We can get you one of the last 2. Price is CHF 50,- plus the shipping. Would you like to place an order ? Thank You Best regards
  8. The CAL lights were on due to a setting in the FADERS menu. The ALARM light was due to the inputs set to digital and I was not giving them a digital signal. I also have the service manual.
  9. As my Nagra V is now faulty, I thought I'd take a look at my Nagra D. It came from Richmond Film. It came with a flight case, soft case, power supply/charger, 2 audio attenuators i/p cables and a time code i/p o/p cable.
  10. I was going through this thread and reading about the history of the SN. Came accross this link http://tinyurl.com/zfkoptz It mentioned me in it, though my first name was spelt wrong!
  11. Looks like this is the IC: https://datasheetspdf.com/pdf/1415032/ICT/PEEL22CV10AZ-25/1
  12. A GAL is a generic array logic chip. It's a one time programmable chip. They say the code is no longer available. This is what happens on my V.
  13. Heard from Nagra that my Nagra V might not be repairable. They say it could be a GAL that's faulty and that can't be replaced.
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