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S-Z370Analog Multimeter - Volt-Ohm-Millimeter
Intermagnetic version to prevent interference from magnetic fields. Double protection of diode and fuse, transistor hFE test function. DCV: 0.25V, 0.5V, 2.5V, 10V, 50V, 250V 1000V. ACV: 10V, 50V, 250V, 500V,1000V. DCA: 50 uA, 2.5 mA, 25mA, 250mA. Ohms: x1, x10, x1k, x10k. Dimensions: 148mm x 98mm x 41mm
$16.95
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S-TBMA2-EL84Bias Master™ - TAD, 2 Noval Probes
Biasmaster™ Test adapter pair for tubes with noval base.
Spare noval probes (2 pieces = one pair) for use with the BIASMASTER System. Enables measurements on EL84, 6BQ5 etc.
$65.00
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S-TBMA2Bias Master™ - TAD, 2 Octal Probes
Biasmaster Test adapter pair for tubes with octal base,
Octal spare probes (2 pieces = one pair) for use with the BIASMASTER System.
$65.00
On Backorder
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S-TBM4-EL84Bias Master™ - TAD, with 4 Noval Probes
BIASMASTER System BM4-EL84 Measures BIAS current of any EL84 etc. in your amp. Includes 4 noval probes (2x S-TBMA2-EL84) and english/german operation manual.
The BiasMaster™ allows to monitor the bias current safely and easily. While adjusting the Bias control pot of your amp the BiasMaster™ does show the actual result. This lets you set and evaluate all reasonable biasing range your amp and tubes offers to find and set your personal perfect choice.
The Bias setting has a dramatic impact on the amp's response, break-up and dynamic character.
$195.00
On Backorder
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S-TBM4Bias Master™ - TAD, with 4 Octal Probes
BIASMASTER System BM4 Measures BIAS current of any 6L6GC, 6550, EL34, 6V6GT, 5881, KT66, KT88, KT90, KT100, KT120, 7027A etc. in your amp. Includes 4 octal probes (2x S-TBMA2) and english/german operation manual.
The BiasMaster™ allows to monitor the bias current savely and easily. While adjusting the Bias control pot of your amp the BiasMaster™ does show the actual result.
$195.00
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S-Z150Digital Capacitance Meter - YF-150

Nine ranges give precision readings from 0.1 pF to 20,000 µF. Can be used to check virtually all capacitors for tolerance value, selecting matched sets, etc.



  • 0.1 pf to 20,000 μF, 9 ranges
  • Over range indicator
  • 0.5% basic accuracy
  • Tilt stand
  • 3-1/2 digit LCD, 1" h x 2-¼" w
  • 1.5" x 2.8" x 6"
  • Zero adjustment
  • 1.1 lbs
  • Input protected
  • Low battery indicator
  • Includes case, leads, battery, spare fuse and instructions

$42.95
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S-Z3220Digital Multimeter - YF-3220

Ergonomically designed. Uses one 9V battery, included.



  • 0.5% basic DC accuracy
  • audible continuity test
  • 3 1/2 digit LCD, 0.625" high
  • 10M ohm input resistance
  • 1.5" x 3" x 7.5"(w/o rubber case)
  • overload protection
  • voltage to 1000VDC, 750VAC
  • capacitance to 20 microfarads
  • polarity indicator
  • frequency to 10MHz
  • over range indicator
  • 10A (AC or DC)
  • low battery indicator
  • hFE and diode test
  • tilt stand and case
  • 1.6 lbs.

$44.95
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S-MAFGENGenerator - Audio Frequency
The oscillation frequency range of this audio generator is between voice frequency band and super voice frequency band. Square and sine wave. 10K ohm input impedance, 10 V rms maximum input voltage. 600 ohm output impedance. Equipped with synchronized input terminals, enabling the high power output signas to be accurately controlled by small signals. comes with test lead and ground lead. 5.9" high x 9.8" wide x 5.1"deep.
$169.95
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S-MRFGENGenerator - RF Signal

Compact solid state RF signal generator designed for the hobbyist, service bench and technical instruction. The generator is most suitedfor checking and aligning the IF circuit and tuners in AM, FM, and TV's. 100KHz to 150MHz in 6 bands and up to 450MHz on third harmonics. 5.9" high x 9.8" wide x 5.1" deep. Features:



  • Wide frequency range- 100 Khz to 150 MHz
  • With 1 KHz oscillator purpose of modulation
  • High Stability
  • Output control- 0dB/-20dB/-40dB and fine adjuster
  • Frequency accuracy + or - 5%
  • RF output- 100mV rms appx.

$169.95
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S-T5000Jumper Test Lead Set - Clip 35mm, Total Length 24", 22AWG
Set of 10 Jumper Test Leads " Alligator Clips 35mm each. Total Length 24", 22AWG wire. Black, Red, White, Yellow, Green
$3.95
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