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Forum Replies Created

RE: Did Pye did get their circuit diagram wrong? (Pye C 17)

Sorry- yes, I let typing fingers get ahead of brain there. Not so unusual...

In forum Black & White Television

3 weeks ago
RE: Did Pye did get their circuit diagram wrong? (Pye C 17)

@Katie Bush @katie-bush very much so! Over the years, I recall various component packages that did their best to perplex end-users. Grotty PCB-oriented radial carbon comp resistors that looked like tu...

In forum Black & White Television

3 weeks ago
RE: Did Pye did get their circuit diagram wrong? (Pye C 17)

The rounded moulding (compared to the more squared-off cylinder of a typical composition resistor) suggests to me that it's a Hunts (possibly another make) "rat dropping" paper-inside-Bakelite capacit...

In forum Black & White Television

3 weeks ago
RE: Philips 462

I wondered why they had used rubber wiring for the scale lamps and PVC elsewhere? (Similarly with the 462 here) One slightly straw-clutching idea I came up with was that maybe it was felt to be better...

In forum Radio

1 month ago
RE: Croc clips

Lol, I bought one of those boxes last time they came round in Lidl- I would have been happy for them to be sold in a bag of say 20- 80 of the things seems like an infestation! In fact I'd thought of p...

In forum Test Equipment

2 months ago
RE: Philips 462

Wow, two impressive monsters there- widescreen radio? Both very nice sets but the T5001 is easier on the eye, the T898WK is a bit dour and monumental- though it probably has a less compromised AM sect...

In forum Radio

2 months ago
RE: Philips 462

Thanks SB- I had a browse through that thread you linked, the wiring doesn't look bad from a cursory checkover but I know that rubber insulation is funny stuff that might seem perfect in some places b...

In forum Radio

2 months ago
RE: Philips 462

Digging around in the 462 here has reminded me of the 170A that was the reason for its acquisition in the first place and prompted me that I ought to have a go at actually putting it into service. Jus...

In forum Radio

2 months ago
RE: Philips 462

Well, I opened up the 462 here and the output transformer came out in a jiffy as predicted- but unfortunately it also has an open-circuit primary. Maybe an Achilles' heel with this set? The hum-cancel...

In forum Radio

2 months ago
RE: Philips 462

Fitting a resistor in the HT- line for deriving output stage grid bias also helps to drive the overall circuit towards constant current behaviour, reducing voltage fluctuations from the inevitably qui...

In forum Radio

2 months ago
RE: JVC/Ferguson HR3300/3V22 Clock Rebuild

It's quite an eye-opener as to just how much more efficient up-to-date LEDs are compared to their predecessors- the received wisdom of 40 years ago was 20mA for acceptable brightness, now a tenth of t...

In forum Video Recorders, CED, LaserVision, DVD & DTV

2 months ago
RE: Is The Future Not Always Brighter?

I recall that there was a widespread type of 1-to-2 bayonet light-fitting adapter that had a straight-ahead end with a switch and a 45 degree branch that was unswitched, a frequent use being to supply...

In forum General Tech Discussion

2 months ago
RE: Rhetorical Question: Are Old TV's Going to get Banned as a Result

What's in these "vintage teasmades" that interferes with domestic broadband- mercury thyratrons? I suppose we're all used to newspapers being full of ill-informed and half-baked drivel on technical su...

In forum General Tech Discussion

2 months ago
RE: Rhetorical Question: Are Old TV's Going to get Banned as a Result

Well, there's a thing.... It's almost as if they were a little hasty in pointing the finger of blame. I suppose we've all had days when we thought, that's fixed it!- and then the fault came back to le...

In forum General Tech Discussion

2 months ago
RE: Rhetorical Question: Are Old TV's Going to get Banned as a Result

I think governments of any flavour are wary of "banning" items of private domestic ownership- OK, increasingly severe restrictions on firearms ownership have been imposed over the years, but there was...

In forum General Tech Discussion

2 months ago
RE: Thames TV: did they have mobile VTR units and wireless mics in early 70s?

Well, blow me down!- I found myself in one of those Smith's shots. Smiths have acquired themselves an excellent reputation for well-built and long lasting specialist trucks- the BBC went through a sor...

In forum Broadcast Equipment and Trade Talk

3 months ago
RE: Thames TV: did they have mobile VTR units and wireless mics in early 70s?

Yeah, from the TV tech point of view, ground-breaking and long-serving stalwarts but a bit of a (paunchy) camel from the automotive stance. "Events, dear boy, events" meant that several served far lon...

In forum Broadcast Equipment and Trade Talk

3 months ago
RE: Thames TV: did they have mobile VTR units and wireless mics in early 70s?

Posted by: @cathovisor The big problem is that they can suffer from terrifying levels of corrosion. Not helped by the bodies making extensive use of aluminium to keep them within weight limits.Dre...

In forum Broadcast Equipment and Trade Talk

3 months ago
RE: Mystery American Philips Radio

I'd forgotten about that particular extreme manifestation of politics.... That would make this radio an interesting historical artefact as well as a technical curio.

In forum Radio

4 months ago
RE: Mystery American Philips Radio

That's an interesting snippet- as said, one could understand a Dutch-made radio going to Indonesia in the way that British "export" sets with multiple SW and no LW went to Kenya or India. US-made Phil...

In forum Radio

4 months ago
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