TAD100 IC source (some Roberts radios use them)

[Yorkie]

I'm not a fan of Roberts radios, but I know that like Hacker, they have their following. Roberts had a propensity (still do, judging by the crudely made, overpriced 'Revival') to incorporate quirky cost saving ideas. An example of this, (not limited to Roberts of course), was the ghastly Mullard modules. In the RIC1 & RIC2 they compounded the felony by using not just a Mullard 1175 module, but the now long since obsolete TAD100 IC for the front end and IF stages.

Very occasionally the TAD100 IC appears on e-bay, and there's an advert for them now at the very reasonable price of £2.95 + 95p post.

Roberts fans who own, or might in future be inclined to buy an RIC1 or RIC2 might wish to take advantage of this opportunity while they can:

http://www.ebay.co.uk/itm/MULLARD-TAD100...7675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D8924434260532043005%26pid%3D100011%26prg%3D1005%26rk%3D2%26sd%3D290605642288%26

Hope that's useful to someone out there.

[tiv48]

I bought 5 tad100's about 6 years ago ,sods law about 20 RIC1 and 2 later and not one with a faulty chip.
rob t

[Yorkie]

Reasons to be cheerful Rob!!

[Skywave]

I bought 5 tad100's about 6 years ago. Sods Law: about 20 RIC1 and 2 later and not one with a faulty chip.

Seems like you bought a 'tad' too many, then!

Al.

[Mark Hennessy]

Seems like you bought a 'tad' too many, then!

Groan

Have to say that I've found these to be 100% reliable - a lovely little chip that is a much more welcome sight than any Mullard module!

Hacker used them for two sets - the RP73 Autocrat II, and the RP71 Harrier. The latter was an FM set, so they succeeded in making it work well at 10.7MHz.

So, other than these, and the Roberts RIC1/2 (which didn't use Mullard modules IIRC), does anyone know of other sets that use the TAD100?

Mark

[Ian E G7OLT]

From memory (so I’m probably wrong) the Bush TR 230 does.

[Mark Hennessy]

Hi Ian,

According to RadioMuseum.org, you are correct. And the other set they list as using it is the Murphy B870.

http://www.radiomuseum.org/r/murphy_b870.html

No Hacker Harriers or Autocrats listed - I wonder if I can navigate the site sufficiently to correct that

Amazingly, you can get the TAD100 from Amazon!

http://www.amazon.co.uk/Mullard-TAD100-R...B009FIUUPI

Cheers,

Mark

[Yorkie]

...the Roberts RIC1/2 (which didn't use Mullard modules IIRC), does anyone know of other sets that use the TAD100?

You're correct Mark - my mistake the 'LP1175' in the RIC1/2 isn't a Mullard module - it's the IF filter used to follow the TAD100 prior to the discrete transistor output stage.

Oh well, that's one saving grace! These sets also have a decent sized 7 x 3.5" elliptical speaker and can poke out up to 1 Watt.