KWS-1 Power Supply Restore Completed

This is the High Voltage side of the power supply. I have the low and high voltage schematics together, and will go over every change I made and make sure I did it correctly. Then I will turn it on and give it the old “smoke test”. I also need to make sure I have whatever accessory connections – antenna to TR switch, speaker…

KWS-1 Power Supply Restore

I replaced these three paper capacitors and the selenium rectifier with new components: I used a 1N4007 silicon diode for the old rectifier and used its post to hold a 3 lug terminal strip. I double checked the schematic – just to make sure I got the polarity correct. The next part is a little bit tricky – but no real big deal. This…

Fun Testing Tubes!

Inside the Collins KWS-1 power supply. There are voltage regulator and rectifier tubes. Its quite a surprise – what a “soothing” thing it is to test tubes. I’ve had an “interesting” first two months of this year, and am so thankful to have time to get back into the hobby again. What better way than to make sure the KWS-1 power supply is running…

KWS-1: When SSB was Brand New

The KWS-1 and 75A4 were introduced in 1955, 4 years before I was born. SSB was brand new – and I am sure the AM vs. SSB argument was raging. I also am betting that Collins helped really change things with this awesome pair of receiver and transmitter.  

KWS-1 in Progress

Excellent 1955 QST advertisement – this is the year the Gold Dust Twins were introduced My KWS-1 has arrived at Howard, W3HM’s shop, and so he will be starting on the restore very soon. I predict that I will get the rig back by February, if all goes well. I will be replacing the capacitors and a diode in the Power supply – there…

KWS-1 Power Supply Restoration at KY6R

The inside of my KWS-1 Power Supply is in even better condition than I had expected. There is just a little dust in the bottom. I guess I expected worse due to the condition of the outside – but at 65 years old – I’d rather have the outside be a little rough than the inside. I figured I could work on this power…

For The Mere Price of This Linear Amplifier ….

I never intended on getting into this Collins Jazz as I have. However, it’s turned into the most welcomed new “thing” in my hobby world since getting into DXing and DXCC in 2001. CBS Orchestra – War of The Worlds was broadcast in 1938 – some SW-3 receivers picked that up I’m sure! This morning I was listening to classical music on the SW-3…

KWS-1 on its Way

The RF Deck (top unit) is now on its way to being restored. I will restore the bottom unit – the Power Supply – and it will mean testing tubes and replacing electrolytic capacitors – straight forward stuff. I will also clean up the cabinet and do a thin over spray of “St. James Grey”. I probably will get replacement tubes for the Power…

All Eyes on 2019 Now

A NOS Eimac pair of these little bad boys will power the KWS-1 and my radio fun in 2019 Today I took the AL-80B out of the operating line at KY6R – because I see that 3Y0I has pushed their trip to 2019 – whenever the ship leaves. I’ve held off plans to re-arrange the shack for the last 2 months – while they…

Preparing for The Collins KWS-1

  Collins TR switch (110 volt relay) There are several things you need to get the Gold Dust Twins to work together: TR switch – the relay you see above – I found one relatively cheap ($50) – I saw one for sale for $285!! Interconnecting wires between the relay, the receiver speaker and of course the coax to each rig and the antenna…