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Hi guys! Working on a Royce 642 and thanks to @Shummy that shared the service manual my life became much easier. First thing was to fix a bad power switch which was an easy task since the switch is a DPDT and only one pole was used, which was burnt, but the other one was as new. The TX/RX...

Near the Arctic Circle we have five seaons and these are: winter, spring-winter, spring, summer with 24 hours of daylight and autumn. So … what is really ”spring-winter”? It is a time when the light finally arrive after a winter with at times quite cold temperatures and this year -46 (-50F)...

BTW, you can be assured that I will get back with info on the Royce 642 vs Pace 8193 in a new thread.

Thank you so much Shummy!! A quick look at the PCB as well as the schematic tells me that the Pace 8193 is the same radio or very very close! The power supply seems also to be exactly the same. Thank you once again and hope I get the opportunity to share something with you guys!

Thank you Jeff! I will have a look in that thread! 73 Bjorn

Thank you so much Dan for having a look if you had one! This Royce 642 manual seems to be a real hard-to-find one. Thank you once again!

Hello everyone! I am working on a Royce 642 but failed to find a service manual on the webb. By chance, does anyone have it and willing to share it with me? Thank you!

Thank you so much secret squirrel and yes I know very well what you mean! Maybe it would have been wise to just start a new thread, but since I started here, also got lots of help, I thought It could not be that bad to add the mod. It is not an easy task to achieve dim steps with two resistors...

I thought I would share my dim mod with LEDs on the CRT Hercule display as well as the meter backlite. There is now three dim steps but they are not 100 percent okay because it is quite difficult to get it perfect with two resistors. Of course, if I would have spent more time it may have been...

Does any of you have any experience with this type of Effect SA-1 amplifier? These were manufactured in the early 70's and back then the price tag was set at around 60 USD. The SA-1 has a pair of 12JB6 tubes but some of these amps had 6JB6; which the only difference is the filament voltage; 12...

Very kind of you, thank you so much Smokinone! That looks promising! I will have a better look when I get back to my shack. :)

Hi! I am looking for a service manual for a President Jackson, which can be seen in the attached photos, and I have tried hard to find it, but to no avail. My friend, who is the owner of the radio, says that it intermittently refuse to switch to TX. There is, as he said, not the microphone...

Sorry, but I have only the 13-880B, the other one is a 13-885 with a bad 7,8 MHz crystal filter. I have the manual for the 13-880B though.

I will have a look what I have on these two models when I get in the shack later; think I have both the 880 & 880B, but sadly one of them with a bad 7,8 MHz filter.

WOW! Well done!! Thank you so much sunbulls!!

Thank you so much Jeff!!! :) Me too getting old because I did not find the manual but you did! :LOL: This manual will do just perfect. Tram Titan is a very nice build and good looking, but I see that it has DSB. Bjorn

Hello Dan! I am looking for a service manual for a Tram Titan II, but they seem to be very hard to find. By chance, do you have one? Thanks in advance!

Hi again! This is what I did to get the LED illumination for the display to work and will do just about the same with the meter LEDs as soon as I got time to do it. I may change values on the resistors R4 and R6 in order to get a bit better dim steps, but it would have been nice to have the...

I was working on an old Midland 13-885 with really awful modulation on USB. Look att the filter response (a bit to fast SWT) and at 7,7985 MHz.

Thank you so much nomadradio! Yepp, that is the right schematic for this display. They wrongly placed PNP transistors in the schematic for the dim switching, which are NPN, but everything else is perfect as far as I can see. I will hook up the scope, just for fun, on the base on both...