Triplett Collection: Signal Generator

Triplett Model 3433 Signal Generator

2011-03-31

On an Internet Market Place I dicovered this fine signal generator. It is a versatile apparatus though not in working order, right now. It is my intention to get it up and running again but I have not come to it. Copys of the manuals were kindly sent to me, so I hope to find some time soon, than I will bring it back to life again.

I have taken extensive photo's of this 3433 that can be enjoyed on this page.

Brand name:

Triplett

Modell:

3433

Serial no.:

Freq. Ranges:

100	-	200	kHz
200	-	400	kHz
400	-	820	kHz
820	-	1700	kHz
1.7	-	3.5	MHz
3.5	-	7	MHz
7	-	14.5	MHz
14.5	-	27.5	MHz
27.5	-	55	MHz
55	-	120	MHz

Modulation:

AM, AM-CW, FM, FM 2 MHz

Deviation:

50 MHz	-	400 ~ x 1
50 MHz	-	60 ~ x 2
2 MHz	-	60 ~ ÷ 5

Output Power:

Tubes:

Xtal:
Brand :
Freq.:

1, oven type
Bliley
1,000 KHz

Sockets:

External Modulation - 4 mm
Ground - 4 mm
RF Input - 4 mm
Horizontal Sync - 4 mm
RF Out - PL519

Patents:

Year of birth:

1950's ?

Dimensions:

Accessories:

none

Scale in detail

Very nice working vernier. Unfortunately, the previous owner did not cut his fingernails on time, so some paint around the knob is gone.

The scale goes around for 270 degrees, so a commercial, receiver type variable capacitor can be expected.

Brand name and type number

Range switch and green control light. Printed dial was scratched by the same nails. :- (

Modulation selector panel.

Deviation and output panel.

The PL-519 socket seems not to be original to me. And above that, the Hi-RF plug was removed.

I would like to bring that back to original, but need the manual to see what was used for these plug originaly.

The meter circuit.

The interior.

Eight tubes and one crystal.

Observe the small tuning capacitor.

To the left one not original transformer. This transformer was made by Philips - The Netherlands, and according to the model during the 1950's. Originally these transformers are soaked in tar, so black. This one was painted grey.

To the right the frequency switch with around it an array of frequency controlling components. The small trimming capacitor, bottom right, seems to be added later.

The Bliley Crystal Unit with inside a 1 MHz crystal. This unit is a so called "oven". It has e heater element inside that keeps the crystal on a constant temperature so frequency shifting is kept to a minimum.

The unit is mounted on an octal plug, fitting an octal socket as used for tubes.