I have done lots of these although it’s a few years ago. I do remember scratching my head over the isolated capacitors. I think I have the same receiver in the loft somewhere. Unfortunately my power supply is at work but perhaps I will reunite them. I also have two of the KW receivers of a similar vintage. It reminds me with all the possible configuration options that back in the day people were expected to know what they were doing. Or perhaps a lot of stuff got blown up in error back in the day. Thanks regards Chris
No, I think more people knew what they were doing. Nowadays some people think it's clever to throw things away & buy (yet another) new one. So just because this psu came with that HW12A, it doesn't mean they were ever connected together, and clearly not with the HT setting at 300V instead of 250V. We did listen on 3.5Mhz last night & it sounded great, just using a CB aerial; the 80M one not yet finished (waiting for custom made t&K wall brackets for the earthy end) Hopefully I'll align it today. I'll have to use my boat anchor signal generator as all the bench ones here don't do 3.5Mhz! Richard
@@ukfmcbradioservicingTango21 With the high voltages of the old equipment you had to take care, no second chances! If you got something wrong it could have rather spectacular effects, just for a second or two before all the fuses in the house blew.
Have to say when you placed that metal cased radio on top of your open power supply and moved it around by hand it gave me a fright. When I work on these things I don’t leave anything open unless aligning and when I do that I wear protective gloves all the time running the power supply through a variac that has a current limiter via a lightbulb.
Bear in mind I'm in a country where 230V is the normal mains voltage with 415V as multi-phase. All individual plugs are appropriately fused & the bench is covered by an Earth Leakage circuit breaker. The bench power is via a Contactor with emergency stop buttons on the edge of the bench. This radio was operating through a Variac. Richard, G0OJF, UK
I had a look and amphenol have restarted manufacturing these connectors. They are used in high end audio valve amps. Do a Google search for www.amphenolpcd.com › node Industrial/Audio Relay Sockets | Amphenol PCD the page I found included the plugs but I don't know who retails them. May be a wholesale situation or £500 per plug from a hifi shop.
Thanks Richard, it's a mine field, take it steady.👍
I have done lots of these although it’s a few years ago. I do remember scratching my head over the isolated capacitors. I think I have the same receiver in the loft somewhere. Unfortunately my power supply is at work but perhaps I will reunite them. I also have two of the KW receivers of a similar vintage. It reminds me with all the possible configuration options that back in the day people were expected to know what they were doing. Or perhaps a lot of stuff got blown up in error back in the day. Thanks regards Chris
No, I think more people knew what they were doing. Nowadays some people think it's clever to throw things away & buy (yet another) new one. So just because this psu came with that HW12A, it doesn't mean they were ever connected together, and clearly not with the HT setting at 300V instead of 250V.
We did listen on 3.5Mhz last night & it sounded great, just using a CB aerial; the 80M one not yet finished (waiting for custom made t&K wall brackets for the earthy end) Hopefully I'll align it today. I'll have to use my boat anchor signal generator as all the bench ones here don't do 3.5Mhz!
Richard
@@ukfmcbradioservicingTango21 With the high voltages of the old equipment you had to take care, no second chances! If you got something wrong it could have rather spectacular effects, just for a second or two before all the fuses in the house blew.
Have to say when you placed that metal cased radio on top of your open power supply and moved it around by hand it gave me a fright. When I work on these things I don’t leave anything open unless aligning and when I do that I wear protective gloves all the time running the power supply through a variac that has a current limiter via a lightbulb.
Bear in mind I'm in a country where 230V is the normal mains voltage with 415V as multi-phase. All individual plugs are appropriately fused & the bench is covered by an Earth Leakage circuit breaker. The bench power is via a Contactor with emergency stop buttons on the edge of the bench. This radio was operating through a Variac.
Richard, G0OJF, UK
I had a look and amphenol have restarted manufacturing these connectors. They are used in high end audio valve amps. Do a Google search for www.amphenolpcd.com › node
Industrial/Audio Relay Sockets | Amphenol PCD the page I found included the plugs but I don't know who retails them. May be a wholesale situation or £500 per plug from a hifi shop.
Thank you,
Richard