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Clubs, Groups and Societies For discussions about various clubs, groups and societies relating to our hobbies, such as the BVWS (incl NVCF), BATC, RSGB, APTS, CLPGS, THG, TCC etc. This is NOT an official forum for any of these organisations.

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Old 4th Sep 2019, 11:32 am   #1
dragonser
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Default Dulwich Museum Television event and sale

HI,
just to let you know that the Dulwich Radio Museum is having a Television Open day event and sale of some items on Saturday the 7th of September.
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Old 4th Sep 2019, 5:21 pm   #2
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Default Re: Dulwich Museum Television event and sale

Hi,
just to confirm that there will be a tabletop sale as well as the television event, please contact Eileen if you are interested. start time 11 am, entry for stallholder 10 am.
entrance costs 10
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Old 8th Sep 2019, 6:14 pm   #3
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Default Re: Dulwich Museum Television event and sale

I actually went to the museum yesterday after saying I would for several years and had a good wander around . although I got tired very quickly but nonetheless I enjoyed my visit. here's some pictures in case anyone has forgotten what the place looks like.
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Old 9th Sep 2019, 9:25 am   #4
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Default Re: Dulwich Museum Television event and sale

Thanks to everyone that attended the television event.
The two Murphy receivers in the workshop were running from 405 line VHS tapes I recorded in 1984/85 with a 405 line system A modulator supplying the signals from a Ferguson FV26D VHS VCR.

We were probably the only guys in the World that were watching 405 line programmes on a pair of 1957 Murphy V310 series, the 17" model being the much rarer light oak cabinet version, and it's big brother the V320 21" receivers side by side! If you include the V310 in the main television display, that makes a total of three making the likelihood even less!

In the darkened room just off the workshop housing the early 1920's wireless and the much later communications receivers [looked after by Phil Moss] I installed the 1950 Bow Decca projection/radio console [from the main display] together with my own, very diminutive JSF large screen projection receiver. Both performed extremely well producing very watchable pictures from the 405 line tapes throughout the day.

The Decca's display approached that of a CRT receiver of the period and viewed at the correct distance, the results were impressive. These projection receivers from the early 50's were never intended for general home use. They were designed for the posher hotel TV lounges, golf clubs and large country houses etc where the viewers were around 20ft from the separate screen or self contained receiver, such as the Decca itself.

The JSF [J.S. Feilden] produced projection receivers down in Devon. They obviously had an excellent team of designers confirmed by the very small size of the chassis and it's excellent construction and layout. The model displayed dates from 1954 the appearance of which can be seen in the pictures.The chassis measures 10 inches wide, 18" long and just over 8" high complete even down do the loudspeaker.
The picture at the museum was projected onto a vintage white cine screen provided by my fellow television curator, Peter Sanders incorporating powdered glass reflective 'beads' to improve picture brightness. It is surprising how large a picture can be obtained at reasonable brightness.

In the main television room we had all the receivers showing vintage 405. The 1938 7" Marconi, equivalent to the HMV 905 worked all day despite requiring further work to complete. The 3/2 CRT has a massive ion burn at it's centre but does not distract from the performance of this 80 year old television receiver. The Murphy A56V 9" 1938 console also performed well but there had to be one party pooper..
The EHT/mains transformer melted in the Pye D16T. Mike Barker kindly removed the power supply chassis and if all goes well a rewound transformer should be available in due course.
A good selection of sandwiches,teas coffee etc was provided by Eileen and the weather was just about perfect for the day.
Thanks everyone, you made it a great day. Regards, John and Peter.
PS I was so busy on the day that I did not have the time to take any pictures! Please post any you have. J.
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Old 9th Sep 2019, 1:22 pm   #5
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Default Re: Dulwich Museum Television event and sale

Hi,
I was pleased to be able to get along.
a couple of photos attached, not as good as I would like.
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Old 9th Sep 2019, 1:49 pm   #6
dave walsh
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Default Re: Dulwich Museum Television event and sale

Thanks for putting up those photos, I've never made it to the Museum yet despite once picking up a Tape Recorder in Dulwich but being subject to a tight early morning time schedule, on the way North! I did meet Gerry Wells though and [by chance] one of his very immediate Dulwich neighbours [the house at the back-from years ago] here in Bexhill. John [HCT] refers to a darkened room. Is that the general presentation, especially vintage TV's or some other reason? [No criticism of the photos is made or intended-I'm grateful to be able to view them]

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Old 9th Sep 2019, 3:41 pm   #7
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Default Re: Dulwich Museum Television event and sale

Ok John here's another 5 more .


Cheers
Neil.
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Old 9th Sep 2019, 4:22 pm   #8
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Default Re: Dulwich Museum Television event and sale

Hi,
here are some more
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Old 9th Sep 2019, 8:27 pm   #9
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Default Re: Dulwich Museum Television event and sale

Hello Dave, Nothing sinister with the darkened room . It was ideal for demonstrating the two projection receivers giving pictures similar to a home cine. It does not have any windows but surprisingly providing light is not cast directly at the screen, a low light does not degrade the pictures.
It is interesting to note the 'colour' of the two Murphy receivers. I fitted a Mullard MW53-80 into the V320 21" model in place of the useless Mazda CRM212. The 17" V310 has it's original CRM172.

All photos are welcome lads. Keep 'em coming! John.
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Old 9th Sep 2019, 9:34 pm   #10
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Default Re: Dulwich Museum Television event and sale

Here we go then.
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