The Price

for the
Tube tester Model W 20 ready for service
to it belong or will be supplied also:

• 2 testers with supply line and banana plugs
• 2 cables for external electrode connections with different large caps
• adapter for power amplifier tubes
• adapter for subminiaturvalves
• short circuit cable with a black banana plug
• short circuit cable with a red banana plug
• 7 special cables, consisting of red special sockets one of which has a cross hole, for the connection of weak wires of Germaniumdiodes, subminiaturvalves etc.
• one silicon rectifier 8 500 C 400
• one silfcon rectifier B 500 C 1200
• one tube tabular book with clamping folder, full instructions for service and. a switch-sketch
• 1000 test result stickers.
• 13 plugs.
• 1 pertinax plate, 2 mm, size of the case of the tester for the protection of the test cards.
• All test cards and spezial cards (more than 1100)

Price of the tester W 20 in a walnut case (walnut polished) with the above mentioned accessories.

External dimensions 535×455×240 mm. that is 21×18×9½″.

Weight with all accessories, but without test cards: 19,2 kg
that is 42,5 lbs.

Weight with all accessories, but with test cards: 23,1 kg
that is 51 lbs.

Modell W 20 with test-card put on
The lid can be removed

FUNKE TUBE TESTER

Model W 20

A tube tester for the technicians. . . .

makes possible the most quickest and most simple reception of all charakteristic lines possible for tubes, of the mutual conductance grid penetration factor and amplification factor etc. The service of the tester has been simplified by means of test-cards, nearly the same as in our Standard-Model W 19 and as well through other measures. For example it will be possible to switch over when choising a source of current of a certain seize on the region of voltage. Besides tubes, subminiature tubes and Germanium-diodes can be tested, never mind whether they fit into a socket or if they possess wire connections.