Reading around http://www.eyesofageneration.com/Archives_Camera_Census.php it sounds like their not to many of this Model around. Does this Camera count mean Heads or Complete Chains ? I think their must be more than 16 World wide .How many were made ?

I think at least 916 were made, and without thinking to hard I can account for at least 9 survivors, I only have one. It is quite surprising how many are hidden away. It needs some thorough counting to establish how many are left.

Brian

It was a camera used in the studios of "TV Excelsior" a famous TV network that existed here in Brazil in the 60's ( my avatar is the logo of that network ). His camera can be seen, with the rest of his collection, here:

http://www.televisoresantigos.com.br/

Lets start the count
I can account for at least 5 chains & 4 Heads now in NZ(2 EX BBC TVC Model A,s) .Their,s more heads floating around the world !But were are the complete cameras (chains). The others are model J/k,s. that now makes


916 were made

UK=9 Chains ? Heads
NZ=5 CHAINS 4 HEADS Known to be about
AUS= Nearly 1 Chain 2 Heads
Brazil =1
Gibraltar=1 Looks like 1 more Head according to this Photo http://www.facebook.com/photo.php?fbid=404342119603343&set=a.197108410326716.39183.189359747768249&type=3

I have an almost complete chain here - ex ABC, and possible ex BBC as some of the boards had BBC markings on them. It has the large PSU unit and CCU cases and remote control panel, however is missing the main master panel

There was another one around ex HSV7 that was supposed to be complete and once working that another collector had, however it really wasnt looked after and had a lot of damage/abuse to it in this persons care which was a shame.

Another HSV7 camera was donated to the television museum at mornington many years ago and it was claimed to be working at the time, last i saw it was on display at the ACMI exhibit in 2006 or so, with added scratches and handling damage and I was told all the external stuff like ccu/psu of all the gear was never retained on items, so its just a prop now.

Whats is the Models of the Mark !V PLease ?

models? - MARK IV ? were their revisions or serial numbers on these? I'll look if you can explain what i am looking for

BTW, eyesofageneration.com's camera counts are incorrect for my collection, i wrote to him some time ago and gave accurate numbers of what i have, but he was unable to update it or something which is a pity - my name is spelt wrong too!

I was told all the external stuff like ccu/psu of all the gear was never retained on items, so its just a prop now.

This is one of the most distressing aspects of a "proper Museum" run, no doubt by Art types! would they keep a vintage car and take the engine out because in made it lighter! GRRRRR.

I hear many stories of the decimation/loss/miss-placing of someones donated collection. The last one I heard was referring to telegraph equipment. I am far from convinced that a Museum that has to justify its existence in terms of bodies through the door and or profit is a safe place for anything.

All of Marconi's camera Mks went through a process of continuous improvement, so they were sometimes referred to as an "A" or "B" type. For instance the MkVIII had an official B suffix from about serial number 400, but even this depended on what type of tubes the camera could accommodate. (HOP Tubes).

All of the cameras had /00 or /01 on the end of the BD683 B3096 number and so on for line standard & mains voltage/Frequency differences.

Time permitting I will return the the MkIV on my site and redo the pages, Have a lot of stuff to but it may take a while.

Regards

Brian

www.tvcameramuseum.org

It has the large PSU unit and CCU cases and remote control panel, however is missing the main master panel

Their is only one Control panel for the Mark 1V I,ve seen !

The panel i have for mine is the remote one, which has the slider control for iris etc, in other words the one the ccu operator would have been "riding" on air if called for. Rather than the main panel which would i assume by for setting up the camera.

I cant find any mention of modem number on my camera, it has no little nameplate on the side like many others i have seen, not even the little warning about opening the camera up.

My camera has a broken rubber band thing to turn the turret with, no focus spinner, tally lamp cover, viewfinder hood, and the orthicon yolks thermometer is broken, and the fan intake had perished. But other than that its all in very good condition for its age, much better than others i have seen.

My MARK 8's are mostly "B" models, except for one, still yet to get any of them working due to the troubled camera head psu modules, a technician friend is looking at them currently and is fascinated by seeing something he's never seen anything like before!!

Brian, i must at some point send you more photos for your website

There,s less than I thought !
UK=9 Chains ? Heads
NZ=5 CHAINS 4 HEADS Known to be about
AUS= Nearly 1 Chain 2 Heads
Brazil =1
USA =6
Gibraltar=1 Looks like 1 more Head according to this Photo http://www.facebook.com/photo.php?fbid=404342119603343&set=a.197108410326716.39183.189359747768249&type=3

I think that the Number for NZ might be lower now thanks to the Earthquakes ?

This kind of stuff REALLY needs to be saved, IMHO..

I must say I whole heartedly agree with Brian about his observations reguarding private collections being donated to Museums. Its very hit and miss, more often a miss, and usually off into a black hole.

As Brian says not only do curators and Museum directors come from a very different world compared to Broadcast Engineers, none have the talent or inclination to create a working display of genuine preserved equipment, as most already lack the space to display the volumes of existing items already in deep storage.

Most Museums are doing well if they break the 25% point. i.e They usually only can display a quarter of their total inventory at any one time. Thats why many rotate items over a 5 to 10 year period or so.

The Sydney Power House is a classic (NSW Governmnet run) example of this policy and practice. But it does not work for all items. I know they have a complete Marconi MK VII - yes a SEVEN. One of two that VTC Sydney donated at end of life in the 1980s, and one of only about eight or nine in the entire country.

Alas I have never seen it unpacked and on display in over 25+ years.

The closest you can get is a few pictures on line - and even then its all sitting on a pallet in storagre. The recent (2006) temporary exhiibit celebrating 50 years of TV in Australia only had the tired old Ferseh from TCN-9 and the Marconi MkIII from ATN-7 on static non working display - both heads only.

The closest we have in this country is the Barry Lambert led ABC-TV PYE OB Van Restotation at the Australina Natioal Musem in Canberra. I am proud to say I helped Barry with a donation of a couple of PYE MkIII camera cables in 1999. But eben this disply is only fired up on 'special' ocassions.

Like most specialist problems in life don't expect any government solution - becuase if you want something done properly you will have to do it yourself.

I hope to be a 'white knight' in the next few years - i.e offering a dry, clean equipment display and repair facilites, for both my current collection and for other like minded collectors.

But it does take money to setup such establishments, and pay for that little thing needed top keep it going and make it all happen ... electrcity :)

Looks like 1 more Head according to this Photo http://www.facebook.com/photo.php?fbid=404342119603343&set=a.197108410326716.39183.189359747768249&type=3

models? - MARK IV ? were their revisions or serial numbers on these? I'll look if you can explain what i am looking for

BTW, eyesofageneration.com's camera counts are incorrect for my collection, i wrote to him some time ago and gave accurate numbers of what i have, but he was unable to update it or something which is a pity - my name is spelt wrong too!

The SN is by the Fan inlet on a Black Plate on the Right door .

facebook link doesnt work...?

facebook link doesnt work...?

Thanks Just up dated it .

On our Network News , I saw One of these Camera,s (In Count) that is Going again in Dunedin (Never left Studio ex DNTV) .

Can you use Mrk 8 Cable to run a Mrk 4 Camera please ?

Yes and no! The BICC Mk4b cable and the T1889 cable (the thin stuff with the aluminium connectors known as Mk8 cable) are both wired the same, so the older Mk4 cable can be used with a Marconi Mk VIII camera.

It not so clear cut the other way round. I would not be happy because of the voltage and current ratings of the cable. The Marconi Mk IV sends mains (240v AC) up the cable. and ht at 250 -330 volts. Some of the T1889 cable cores are rated at 50volts dc others are at 400v RMS, it would need a lot of checking and looking at the pin outs for both cameras to see what is were!

I would not do it unless I were utterly desperate.

Brian

Thanks Brian, I have short length of BICC Mk4b Cable & lots of Mk 8 .

I have one Mark IV camera head and CCU's power supplies cables, etc. for three. They were a part of my DuMont Telecruiser which came from WFAA, Channel 8 in Dallas. I would love to find at least one more camera head so I could reunite this stuff with the bus. You can see more at www.telecruiser.com and www.chalkhillmedia.org/Museum

Is their a page like this RCA one http://www.oldradio.com/archives/hardware/TV/vmuseum.htm of Marconi / EMI / Phil etc Camera owners ?

I have camera head SN:200. I also have power supply units, CCU's and sets of cables for three MK-IV cameras. They were a part of the DuMont Telecruiser project I'm restoring. www.telecruiser.com I would be most interested in acquiring a second camera head, so I could install two of them in the Telecruiser.

Can Somebody please tell me the wiring of the Pulse/Blanking Cable for the CCU input please ?

I hope this went to one of the members !http://www.ebay.com/itm/1958-MARCONI-IMAGE-ORTHICON-ORTH-TELEVISON-TV-CAMERA-MK-IV-without-TRIPOD-/330792222659

Can Somebody please tell me the wiring of the Pulse/Blanking Cable for the CCU input please ?

I assume you mean the EP8 pulse connector that Marconi often used on their kit. Paul Marshall is the man to give an authoritative answer but I think it's:

Pin 1: Line (Horiz) Drive
Pin 7: Field (vert) drive
Pin 5: Mixed blanking
Pins 3 & 8: Ground

Other pins unused. Mixed sync has its own PL259 conenctor.

I hope this went to one of the members !http://www.ebay.com/itm/1958-MARCONI-IMAGE-ORTHICON-ORTH-TELEVISON-TV-CAMERA-MK-IV-without-TRIPOD-/330792222659

I sure wish I'd known about it. I would have paid considerably more than the winning bid.:sigh:

I assume you mean the EP8 pulse connector that Marconi often used on their kit. Paul Marshall is the man to give an authoritative answer but I think it's:

Pin 1: Line (Horiz) Drive
Pin 7: Field (vert) drive
Pin 5: Mixed blanking
Pins 3 & 8: Ground

Other pins unused. Mixed sync has its own PL259 conenctor.

Thanks for the info .I don't have any paper work on this .

I sure wish I'd known about it. I would have paid considerably more than the winning bid.:sigh:

At closer look it is a carcass .If I was you, I would make contact with this seller as he deals in Old Gear .

At closer look it is a carcass .If I was you, I would make contact with this seller as he deals in Old Gear .

I have sent him a message, but so far, no reply.

I assume you mean the EP8 pulse connector that Marconi often used on their kit. Paul Marshall is the man to give an authoritative answer but I think it's:

Pin 1: Line (Horiz) Drive
Pin 7: Field (vert) drive
Pin 5: Mixed blanking
Pins 3 & 8: Ground

Other pins unused. Mixed sync has its own PL259 conenctor.
Thanks

Does anybody kown the difference between the Vidicon CCU/Power Supply (Looks the Same) as the MkIV Image Orthicon 4.5 inch set please .Just Rescued these from being dumped .

Well saved! They are quite similar but I would need to look at the circuits, there will be lots of detail differences. The vidicon head BD896 had a smaller power requirment than The I.O. also the tube suppies were simpler than the I.O. I ll try to find what the differences are.

I have a MkIV vidicon head, but no CCU or PSU so if you could do some pictures and send them to me I would be able to add them to the camera museum.

regards

Brian

www.tvcameramuseum.org

Thanks Brian for the quick reply .It is amazing whats turning up all over the world with the digital up grades .I got no control panel ,it went in the other skip with the Head .

I have had a look at what handbooks I have in the museums library, the CCUs look very similar having most of the modules with the same number. Sheet two of the CCU drawings, the plugs and sockets on the rear are different, the vidicon one has fewer connectors.

I do not have a drawing for the vidicon PSU, it is in Marconi book T.3975 (hint) but looking at the PSU for the I.O. camera it is mainly the +250volt supply which could be the same, also in the I.O. PSU are the focus, talk-back, and Iris amplifier, these are likely to be missing or different. I have a vague memory that the space is there and they are just not fitted.

So I do think there is a lot of items in common. I can also confirm that the vidicon control panel is the same size and style as the I.O. control panel, but with fewer controls. It is a very attractive panel with black perspex and the lettering is illuminated by bulbs set into the perspex. I do have a control panel for my Mk IV, must do photos of it sometime.

If you are able to do some good high res photos suitable for inclusion in the museum I would be pleased.

Brian

www.tvcameramuseum.org

Been told that the PSU is the same .Not CCU . It was in their sales book apparently .
Haven't given up on the Head yet as it may turn up in E-wast I been told !

Does Anybody know of a Camera Head that is (Beond repair) Parts .Looking for a Camera Door Cable Side .

I think at least 916 were made, and without thinking to hard I can account for at least 9 , I only have one. It is quite surprising how many are hidden away. It needs some thorough counting to establish how many are left.

Brian
Hi Brian, Are they all Full Chains (9) . Looks like these are the Only survivors .

Mine is a full channel viable with all the parts needed, except time!

I know that two of the others are complete, most people say I've got a MkIV and don't go into detail about CCUs etc.

Brian

Can the person that sent private Message .Please resend ! Or Call my IRLP Again Please .

This thread seem,s very popular (3,190 Views).It looks like the final Count for Complete Chains as of (05-30-2012)


UK=5 Chains 4 Known of. Heads 5 (I know golden-agetv.co.uk have 6 ) 1 Chain from NZ

NZ=5 CHAINS 4 HEADS Known to be about (Mine Ex BBC (A/B) and NZBC (J) suffix
AUS= Nearly 1 Chain 2 Heads
Brazil =1
USA/Canada =1 Chain 6 Heads

(That means that their are Only 11 Complete Chains remaining out of 916 made.)
If you have more please post !

Gibraltar=1 Looks like 1 more Head according to this Photo http://www.facebook.com/photo.php?fb...7768249&type=3

I have recieved One of the Chains in the NZ Count (It Pays to Advertise ) all I wanted was a Door(Still wanted) .This Camera is a late Model J (625 Only) and is Complete (In time I will Soak test her).
What are the Known Age Faults to look for please (Apart from Caps & Resistors Valves).

Hi all looking to bye a MK IV camera head / chain to go with my MK VII
also looking for MK VII Power Supply to get camera working also looking for lotes of good luck regardes Paul B