FCC License Number: 0024330797
Authorized Commercial Operator and Test Station/Components Repair Technician

Item is new old stock / open box and was stored in a climate-controlled environment. May have light surface scratches on casing (not head face) due to move from storage location; does not affect operation.

This component has passed end-to-end testing, bench check, and is demagnetized in accordance with manufacturer specifications. Performance test results are listed below and were evaluated using original Nortronics component-specific spec sheets. Performance determined to be within acceptable tolerance of original specifications- typical age degradation considered.

(Reference materials/photos posted above)

Shipping and Handling
ESD (Electrostatic Discharge):
All necessary precautions and preventative measures have been taken while handling and testing this electrostatic-sensitive component. Item ships with proper ESD control measures and materials via USPS to ensure it maintains the same bench check serviceable condition throughout delivery.

Component Type
Model Number:  P-BQQ-7K
Series:  Premium
Head Function:  Record/Playback
Head Type:  In-Line/Magnetic
Type of Circuit:  Tubes/Transistors
BBR UPC:  0004

Test Results Snapshot (@1kHz)
Measured Impedance Values per Channel/Track, Respectively:
1/2/3/4 = 3.140kΩ/2.444kΩ/2.237kΩ/2.768kΩ

Detailed Test Results
Channel/Track 1:
Inductance (@1kHz):  500mH
Resistance, DC:  751Ω
Impedance (@1kHz):  3.140kΩ

Channel/Track 2:
Inductance (@1kHz):  390mH
Resistance, DC:  752Ω
Impedance (@1kHz):  2.444kΩ

Channel/Track 3:
Inductance (@1kHz):  356mH
Resistance, DC:  752Ω
Impedance (@1kHz):  2.237kΩ

Channel/Track 4:
Inductance (@1kHz):  441mH
Resistance, DC:  754Ω
Impedance (@1kHz):  2.768kΩ

Nortronics Tape Head Catalog Description
The Nortronics Model P-BQQ and BQQ is an instrument quality, 4-channel in-line record/reproduce magnetic tape head for 1/4·inch tape. Its fine laminated-core construction is designed for professional applications with the ultimate in high-frequency performance. Deposited quartz gaps as fine as 50 micro-inches result in exceptionally clean “smear-free” gap edges. The all-metal face greatly reduces oxide loading problems and the hyperbolic contour promotes intimate tape-to-gap contact allowing reduced tape tension and elimination of pressure pads. Typical Applications - Instrumentation recording including carrier modulated types such as AM, FM or Pulse, as well as straight digital and analog recording. Tracks of the P-BQQ/BQQ head are compatible with the 4-track stereo system making it ideal for audio duplication, background music and 4-channel in-line stereo.

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