Bush TV22/24 Band 1/111 RF chassis info needed - UK Vintage Radio Repair and Restoration Discussion Forum

Mikeymushradio · 3rd May 2007, 4:27 pm

Does anyone have any info on this please? I have recently acquired a TV24 minus the RF chassis, but the manual does not appear to mention this chassis (A63).

Can anyone throw any light on it, please? It is presumably from the end of the 22/24 production run, so data may be a little scarce.

beery · 3rd May 2007, 4:48 pm

Hi Mikey,

Shortly after the TV32 was released a Band 1 & 3 version of the RF unit was produced. It is only found in wooden Bush sets. I can't remember the model numbers without looking them up.

However, it may not be important as I have EB91 and EF80 versions of the TV22 RF unit amongst my spares. The question is which is right for your set? We can find out though, something to do with the video coupling circuit being on the main deck in early models and on a vertical tag strip at the back of the RF unit on later models.

Cheers
Andrew

Steve_P · 3rd May 2007, 5:09 pm

The A63 receiver unit is used in Bush TV24C, TV33, TV36C and TV43.

The valves are:

V1 : PCC84
V2 : PCF80
V3, 4 and 5 : EF80
V6 : EB91
V7, 8 and 9 : EF80
V10 : EB91

Use the TV43 sheet, which is on Duke Nukem's CD.

Cheers,

Steve P

Mikeymushradio · 3rd May 2007, 6:13 pm

Thanks to Steve and Andy for the quick response.

Excellent stuff!
At least I have something to work from now.

The forum comes up trumps again.

Many thanks
Mikey.

Duke_Nukem · 4th May 2007, 8:43 am

In the photo there are three holes at the left of the chassis. This is where a band I/III switch goes, as well as two tuning controls (one to set the Band I channel, one to set the Band III channel), and there should be a bracket that mounts on the top and sticks out at teh left - it stops the two tuning screws going too far, but has to be removed before you can get the chassis out. Do hope you have these.

To use it in a "normal" TV24, you'll also need to drill a hole in the cabinet and into which a recessed bakelite panel would be fitted.

So to be honest I think the RF chassis you have is too much work fit to a previously single channel '24

.

If you're itching to crack on with the set I do have a spare restored RF chassis - vision ok but sound real low - which I could at least lend you whilst you crack on with the rest of the set.

TTFN,
Jon

PS : The TV43 manual is downloadable from here :-

http://www.thevalvepage.com/tvmanu/bush/bush.htm

Page 7 shows the extra brackets etc that would be needed.

Mikeymushradio · 6th May 2007, 12:25 pm

Hi Jon,
Many thanks for the extra info and studying the manual, plus your advice. I think I will look for an alternative RF unit; I don't want to drill the cabinet really, and then there's the problem of knobs, aerial socket etc in the wrong place so the back would be to modify.

Thanks also for the offer to loan an RF chassis but I have a working TV22 with the correct chassis that I can use to test.
The set has other problems apart from the RF strip, as the mains dropper panel is also missing so the search continues..................

Thanks again
Mike

3rd May 2007, 4:27 pm	#1
Mikeymushradio Rest in Peace Join Date: Jun 2003 Location: Newcastle, Tyne and Wear, UK. Posts: 188	Bush TV22/24 Band 1/111 RF chassis info needed Does anyone have any info on this please? I have recently acquired a TV24 minus the RF chassis, but the manual does not appear to mention this chassis (A63). Can anyone throw any light on it, please? It is presumably from the end of the 22/24 production run, so data may be a little scarce. Attached Thumbnails Last edited by Mike Phelan; 3rd Jan 2008 at 5:31 pm. Reason: S&P

3rd May 2007, 4:48 pm	#2
beery Heptode Join Date: Jun 2006 Location: Ware, Hertfordshire, UK. Posts: 988	Re: Bush TV22/24 band 1/111 rf chassis Hi Mikey, Shortly after the TV32 was released a Band 1 & 3 version of the RF unit was produced. It is only found in wooden Bush sets. I can't remember the model numbers without looking them up. However, it may not be important as I have EB91 and EF80 versions of the TV22 RF unit amongst my spares. The question is which is right for your set? We can find out though, something to do with the video coupling circuit being on the main deck in early models and on a vertical tag strip at the back of the RF unit on later models. Cheers Andrew

3rd May 2007, 5:09 pm	#3
Steve_P Dekatron Join Date: Sep 2003 Location: Bolton, Greater Manchester, UK. Posts: 6,644	Re: Bush TV22/24 band 1/111 rf chassis The A63 receiver unit is used in Bush TV24C, TV33, TV36C and TV43. The valves are: V1 : PCC84 V2 : PCF80 V3, 4 and 5 : EF80 V6 : EB91 V7, 8 and 9 : EF80 V10 : EB91 Use the TV43 sheet, which is on Duke Nukem's CD. Cheers, Steve P __________________ If we've always had it, why is the Car Boot open? You're not sneaking another Old TV in are you...?

3rd May 2007, 6:13 pm	#4
Mikeymushradio Rest in Peace Join Date: Jun 2003 Location: Newcastle, Tyne and Wear, UK. Posts: 188	Re: Bush TV22/24 band 1/111 rf chassis Thanks to Steve and Andy for the quick response. Excellent stuff! At least I have something to work from now. The forum comes up trumps again. Many thanks Mikey.

4th May 2007, 8:43 am	#5
Duke_Nukem Octode Join Date: Jan 2003 Location: Birmingham, West Midlands, UK. Posts: 1,268	Re: Bush TV22/24 band 1/111 rf chassis In the photo there are three holes at the left of the chassis. This is where a band I/III switch goes, as well as two tuning controls (one to set the Band I channel, one to set the Band III channel), and there should be a bracket that mounts on the top and sticks out at teh left - it stops the two tuning screws going too far, but has to be removed before you can get the chassis out. Do hope you have these. To use it in a "normal" TV24, you'll also need to drill a hole in the cabinet and into which a recessed bakelite panel would be fitted. So to be honest I think the RF chassis you have is too much work fit to a previously single channel '24 . If you're itching to crack on with the set I do have a spare restored RF chassis - vision ok but sound real low - which I could at least lend you whilst you crack on with the rest of the set. TTFN, Jon PS : The TV43 manual is downloadable from here :- http://www.thevalvepage.com/tvmanu/bush/bush.htm Page 7 shows the extra brackets etc that would be needed.

6th May 2007, 12:25 pm	#6
Mikeymushradio Rest in Peace Join Date: Jun 2003 Location: Newcastle, Tyne and Wear, UK. Posts: 188	Re: Bush TV22/24 band 1/111 rf chassis Hi Jon, Many thanks for the extra info and studying the manual, plus your advice. I think I will look for an alternative RF unit; I don't want to drill the cabinet really, and then there's the problem of knobs, aerial socket etc in the wrong place so the back would be to modify. Thanks also for the offer to loan an RF chassis but I have a working TV22 with the correct chassis that I can use to test. The set has other problems apart from the RF strip, as the mains dropper panel is also missing so the search continues.................. Thanks again Mike Last edited by Mike Phelan; 3rd Jan 2008 at 5:35 pm. Reason: S&P