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2 PCS GK-71 NEW NOS VACUUM TUBES TESTED ULYANOVSK PENTODE OTK

 

  • BUY WHAT YOU SEE ON PHOTO
  • We can do combine shipping
  • Item discriptions: Buy what you see on photo / tested
GK-71
Glass generator pentode.
Designed to amplify and generate high frequency vibrations.
Decoration - glass, with a plinth.
Working position - vertical, anode up.
Cooling is natural.
Durability not less than 1000 hours.
Weight no more than 320 g.

Main technical parameters of GK-71:
at Un = 20 V, Uа = 1500 V, Uc2 = 400 V, Uс3 = 50 V, Ia = 250 mA
Filament current: 3 ± 0.3 A
Reverse current of the 1st grid (at Iа = 83 mA): no more than 30 μA
Anode current (at Uс = 350 V and Uс1 = 50 V): not less than 35 mA
Emission current (at U = 180 V): no more than 900 mA
Slope (at Uа = 600 V, Iа = 150 and 200 mA): 4.2 ± 0.7 mA / V
Gain on the 1st grid relative to the 2nd (at Uа = 750 V, Uc2 = 300 V, Iа = 130 mA): 5 ± 1
Oscillatory power (at negative voltage of the 1st grid 100 V, excitation voltage 215 V): not less than 250 W
Oscillatory power (at Un = 18 V, negative voltage of the 1st grid 100 V, excitation voltage 215 V, Ia = 250 mA and frequency 20 MHz): not less than 200 W
Insulation resistance between electrodes, not less: 20 MOhm
Interelectrode capacitances, pF:
    - grid-cathode 18 ± 4
    - anode-cathode 17 ± 7
    - mesh anode 0.15
Limiting performance characteristics of GK-71:
Filament voltage: 18-22 V
Anode voltage: 1500 V
2nd grid voltage: 400V
Power dissipated by anode: 125 W
Power dissipated by the 2nd grid: 25 W
Working frequency: 20 MHz
Ambient operating temperature range: from -60 to +70 С

Our advantages:

 

1. ONE business day - handling time of your goods:

  • We do our best to get your goods to you faster. 

2. Highest quality packaging:

  • non-transparent film
  • for fragile lamps, this is a cardboard box.
  • MANDATORY bubble wrap packing of each lamp / part.

Such packaging allows your lamps to be delivered intact in 99.9% of cases. (For all the handlessness of the postal services)

3. Delivery by air:

 

  • All your parcels will be sent by air.
  • This allows you to achieve the maximum delivery speed.
  • Delays are very rare - BUT we are always open and will help you solve any of the situations.

 

3. We are always ready for dialogue:

  • We respond quickly (100% response within a day).
  • You can always combine your parcels into one.
  • Support clients at all stages of the transaction.

4. Our reputation is our face:

  • You can always read our reviews.
  • Each of them is our pride.
  • We are aiming at only 100% result.
Payment Paypal / Payoneer / or other payment services provides in your location by ebay.
Shipping

*** ONE buisnes DAY handling time *** 

Shipping by air.

Radio goods for order

from Ukraine

We can also find and calculate the cost of goods that are not in our store under the order.

For more information - just email me.