Hello Adam;
Buildings are still there in Blackburn and I have looked on Google maps and a few web sites for more information. Not tried Blackburn library, nothing in the local museum when I last visited mainly cotton and art.
I would have thought it was using the standard Mullard projection unit which I thought may have been a bit naughty were they not meant to send out x-rays, so have to be in a particular enclosure or behind leaded glass?
I have done a search via the site https://worldradiohistory.com and the first advert that comes up for rainbow radio manufacturing Co. has been an add in Short wave magazine June 1948 and have found mention of the company in the same magazine for 1958.
It suggests the Owner had a call sign of G2YO. It was also suggested by a radio amateur that perhaps a Harry Leeming G3LLL could have been involved as he had an amateur radio shop on Mincing Lane a few years later on. I will have to ask some older hams in the area of the old call sign when I hear them on.
I tend to think the unit I have is the same as the pictures on the Radiomusem web site, it is not a very attractive unit, but I will get around to checking it out at some time. Other than that I will keep digging and when I can confirm something I will add it to one of the historical sites.
Adrian
Buildings are still there in Blackburn and I have looked on Google maps and a few web sites for more information. Not tried Blackburn library, nothing in the local museum when I last visited mainly cotton and art.
I would have thought it was using the standard Mullard projection unit which I thought may have been a bit naughty were they not meant to send out x-rays, so have to be in a particular enclosure or behind leaded glass?
I have done a search via the site https://worldradiohistory.com and the first advert that comes up for rainbow radio manufacturing Co. has been an add in Short wave magazine June 1948 and have found mention of the company in the same magazine for 1958.
It suggests the Owner had a call sign of G2YO. It was also suggested by a radio amateur that perhaps a Harry Leeming G3LLL could have been involved as he had an amateur radio shop on Mincing Lane a few years later on. I will have to ask some older hams in the area of the old call sign when I hear them on.
I tend to think the unit I have is the same as the pictures on the Radiomusem web site, it is not a very attractive unit, but I will get around to checking it out at some time. Other than that I will keep digging and when I can confirm something I will add it to one of the historical sites.
Adrian
Learning as I go!
Youtube EF91 Valve
Youtube EF91 Valve
