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AM/FM Generator PM5320

AM/FM Generator PM5320; Philips; Eindhoven (ID = 280610) Equipment
AM/FM Generator PM5320; Philips; Eindhoven (ID = 240810) Equipment
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AM/FM Generator PM5320; Philips; Eindhoven (ID = 2216819) Equipment
Philips; Eindhoven: AM/FM Generator PM5320 [Equipment] ID = 2216819 1400x1772
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For model AM/FM Generator PM5320, Philips; Eindhoven (tubes international!); Miniwatt:
An 2 Drehknöpfen fehlen die Abdeckungen.
Country:  Netherlands
Manufacturer / Brand:  Philips; Eindhoven (tubes international!); Miniwatt
Year: 1962–1966 Category: Service- or Lab Equipment
Valves / Tubes 5: ECC85 ECF80 E80F EZ80 PCL82 85A2
Semiconductors (the count is only for transistors) OA73 OA79
Wave bands Wave Bands given in the notes.
Power type and voltage Alternating Current supply (AC) / 110-245 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: AM/FM Generator PM5320 - Philips; Eindhoven tubes
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 220 x 290 x 280 mm / 8.7 x 11.4 x 11 inch
Notes Frequenzbereiche:
0,15...0,48 MHz
0,48...1,5 MHz
1,5...4,8 MHz
4,8...15 MHz
15...50 MHz
10...11,5 MHz
88...108 MHz
0,4...0,5 MHz
Net weight (2.2 lb = 1 kg) 9.5 kg / 20 lb 14.8 oz (20.925 lb)
Price in first year of sale 990.00 DM
Mentioned in -- Original prospect or advert
Literature/Schematics (2) - - Manufacturers Literature (Katalog: Philips Industrie-Elektronik 1966)

Model page created by Hugo Sneyers. See "Data change" for further contributors.

All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt
Here you find 4886 models, 4100 with images and 3264 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Philips; Eindhoven: AM/FM Generator PM5320
Threads: 2 | Posts: 9
Hits: 1707     Replies: 0
philips: PM5320; AM/FM Generator
Karl Reiter

Ich suche zu diesem Gerät ein Handbuch oder eine Kopie davon  in deutsch oder englisch ( im www nur welche in holländisch  gefunden).

Angebote bitte an carl.reiter[A*T]

Danke !

Mit lieben Grüßen

Karl Reiter

Hits: 4812     Replies: 7
philips: PM5320 (PM 5320); AM/FM Generator E80F substitu
Georges Van Campenhout

Good evening Forum Readers,

I herited some time ago a defective PM5320 generator, and I am currently repairing it.

This set is equipped with a E80F Special Quality tube, used as output stage/AM modulator.

I tested this tube with my AVO VCM 163 tube tester and there is a severe C/H Insulation loss.

This means that there is a problem with the isolation between the cathode and the heater.

This tube has similar characteristics as the EF86. Now my question: can I substitute the defective E80F by a EF86?


Thank You


William J Blanchflower
  2 Hello Georges,

The E80F was a high quality version of the EF86 and has the same characteristics as the EF86. I can see no reason why you could not substitute an EF86 for it in your application.

Maitiu Standun

hello georges , i have the mullard reference book giving original and alternatives [tubes]and no mention of either of the valves , are in it , are u sure that these valves in  your set are the original recomended tubes by philips , have you got a schematic of your model confirming that these are in fact the recomended tubes [valves ], respectfully maitiu,



Roy Johnson

Dear Georges,

If you cannot find one, I can probably send you one.



Frank Nicholaisen
  5 The only thing which directly substitutes for an E80F is ... an E80F.

It isn't quite an EF86, even though some people try to charge a premium for E80Fs by claiming this is the case. The E80F is physically taller and takes 300mA of heater current as opposed to 200mA for the EF86. The anode curves are similar if you correct the screen grid voltage. The capacitances are similar and the two tubes shares the same internal structure with the electrostatic shield for the heater, contributing to the low hum levels for both types.

g1g2 transconductance differs by nearly 60%, powerlevels likewise (the E80F is the toughest).

But you can plug an EF86 into a socket intended for an E80F, the pinouts are the same. It may even work after a fashion. Keep an eye on power dissipation.

An EF86 works well at RF. It has no built in frequency counter and will amplify whatever is presented to it if the operating conditions are choosen appropriately.
Georges Van Campenhout

Dear All,

in the meantime, I replaced the bad E80F by a good EF86, and the PM5320 seems to operate normally. I only made a test with relative low frequencies. (AM IF frequencies). I will go on later with FM IF frequencies.

I am aware that an E80F is not an EF86. The E80F is indeed taller, and has golden plated pins, and some specs are indeed different.

I am wondering why Philips used for this application the E80F instead of the (probably cheaper) EF86.

I am also wondering why only this "Special Quality" tube went defective, all the other (standard quality) are OK...

All the other tubes in the PM5320 are standard quality ones, so why use only one tube that has a life of 10000 hours?

PS. Roy, thank you for the offer. I will try to find a replacement E80F here in Belgium.




Frank Nicholaisen
  7 Hi Georges,

After having looked at the circuit I would hazard a guess and say that the Philips engineers were looking for the screen grid dissipation of the E80F, combined with its other particular properties.

In the PM5320 the E80F is run with a very large combined cathode resistor, 560 + 5K6 ohm, so the supressor grid, g3, is quite negative with respect to the cathode. This makes it very easy to make good 'grid AM modulation', because there is little risk of running g3 positive due to 'overmodulation'. You alread mentioned being a modulator was one of the purposes of the output buffer stage.

But running g3 very negative means that the screen grid will - on average - see the brunt of the cathode current. The normal division between screen - and anode current is of course only valid for zero volts on g3.

I haven't done the math, but I would find it interesting to hear if you made any voltage measurements on the circuit with the good EF86 in place. That would allow you to compute the screen and anode currents, and thus the dissipation in each. At 400mW the E80F has double the screen dissipation rating of the EF86.

The reason why your particular E80F has gone bad while the others seems OK could be that the other common valves has been replaced, while the perhaps original E80F was left in place due to the lack of a suitable replacement.

Hope this helps a bit.

John Turrill
Dear Georges,
                       in case you are still looking for an E80F, I have
found a source of them here in G.B.
They are, I suppose, a bit expensive, - £14.00 GBP including
postage each; but then they are Special Quality.
If you are interesred Email me direct and I'll put you in touch.
Philips; Eindhoven: AM/FM Generator PM5320
End of forum contributions about this model