Taylor Model 60 signal generator

[Sinewave]

I can find nothing about this online, so wondering if anyone here by chance has a schematic for it. Or if anyone has one they wouldn't mind opening and detailing in photos the insides.

Thanks!

[Mike Watterson]

I know of a 61 and a 65 (much earlier).
Can you upload a photo?
Does it look similar to either of these?
https://www.radiomuseum.org/r/taylor_all...erato.html
https://www.radiomuseum.org/r/taylor_amf...r_61a.html

[Mike Watterson]

I see you have a thread elsewhere.

[Sinewave]

I know of a 61 and a 65 (much earlier).
Can you upload a photo?
Does it look similar to either of these?
https://www.radiomuseum.org/r/taylor_all...erato.html
https://www.radiomuseum.org/r/taylor_amf...r_61a.html

It looks similar to the first one you've linked to, but inside it's completely different to the 65a and b. Certainly in lay out.

[Mike Watterson]

I wonder is it the same idea? Two triodes and a rectifier.
Modulation by using a transformer driven by audio amp / osc that is in the HT to the RF oscillator?
The modulation transformer died on mine and I used the CT of a 230/115 primary to HT, the two ends to the two triodes and the secondary for the feedback for the audio oscillator. A capacitor sets audio frequency when osc rather than external audio is selected (I think the Mod/CW switch).

I can imagine the layout differs, but since most generators, even some transistor ones are the same circuit I imagine the circuit can't be very different. The attenuator is pretty simple.

[Sinewave]

I wonder is it the same idea? Two triodes and a rectifier.
Modulation by using a transformer driven by audio amp / osc that is in the HT to the RF oscillator?
The modulation transformer died on mine and I used the CT of a 230/115 primary to HT, the two ends to the two triodes and the secondary for the feedback for the audio oscillator. A capacitor sets audio frequency when osc rather than external audio is selected (I think the Mod/CW switch).

I can imagine the layout differs, but since most generators, even some transistor ones are the same circuit I imagine the circuit can't be very different. The attenuator is pretty simple.

Hi Mike,

I had considered that, but I guess it's the confidence of going past the point of no return with this in the absence of the official drawings with it. I shall take another look with the drawings for the 65. Let me take another look tonight...

[Sinewave]

The more I look into this, I'm convinced that the wires coming from the modulation transformer are all in the wrong place on the modulation switch.

[Sinewave]

I'm trying to make a drawing of how it's wired right now.

I'm a little confused over the modulation transformer, there's four connection tabs on it, but also I can see two small wires which leave the insulation so in all that's 6 connections. There should only be four surely.

[Mike Watterson]

Two feedback wires to grid of audio triode (one wire will be earthed?), two for audio triode anode (HT to anode) and one for RF triode HT feed = 5 wires. The RF Triode HT modulation might not share the same HT point as the Audio Triode "primary" winding.

So you need five connections and six isn't extraordinary. My replacement transformer actually has two 0-115 primaries for 230V rather than a centre tap, so they can be in parallel on 110-120 mains.

[Sinewave]

Two feedback wires to grid of audio triode (one wire will be earthed?), two for audio triode anode (HT to anode) and one for RF triode HT feed = 5 wires. The RF Triode HT modulation might not share the same HT point as the Audio Triode "primary" winding.

So you need five connections and six isn't extraordinary. My replacement transformer actually has two 0-115 primaries for 230V rather than a centre tap, so they can be in parallel on 110-120 mains.

Here's a photo of the Tx. I'm just trying to work out which is which, how to illustrate this on a drawing. I will need to mark everything up to test to determine windings, tappings etc, but I probably won't be able to go that far tonight.

The caps to the left of pin 1 are just using the Tx for support, but not connected at that point, but they are connected to pin 4.



I am still working on the drawing of the sig gen. Thanks for your help so far.