I have a mark IV, takes about 20-25 minutes to "warm up" before i can "spot" a channel, i have checked and replaced all tubes that were less than 75%,...
There are numerous capacitors & resistors that go bad in these older radios as time goes by! Not always the electolytics either. Disc & paper tube capacitors...
... transmitter ... Those units were famous for frequency synthesizer problems. It sounds like that is what you are experiencing. I seem to remember that unit ...
Awww man! I gotta put up a FAQ on the Mark IV. Or maybe do a search on this board and see how many times I've written the same detailed bad news on this board...
Wow great info! I picked up a Mark IV recently and to be honest I was one of those people who thought it was a 40ch MkIII... but obviously not. Mine had...
You could always sell it on ebay and use the money to buy a nive Mark III, which is the radio I'd buy if I had an extra few hundred dollars lying around, I've...
Your Mark IV is not recieving weak signals good because I bet the tuibes and all the old capacitors and resistors have not been replaced, the radio is over 30...
Have you tried replacing the 7868 final and how is your swr? Danny nippernchipper <bhhodges@...> wrote: My mark IV is only putting out 1.5 watts any ideas...
The tubes are older than you. ... From: nippernchipper To: tubetypecbradiocollectors@yahoogroups.com Sent: Saturday, July 14, 2007 8:30 AM Subject: [Tube Type...
i think it is the 7558 as well,im gonna order 10 off e-bay here in a bit others here in my area want some too. i have replaced all the tubes even when tested...
I need to start on the restoration of the Messenger 1 and Ratheon TWR-4 but haven't had the time. When I do I'm sure I will be seeking the advice of those...
Everyone is on vacation. ... From: nippernchipper To: tubetypecbradiocollectors@yahoogroups.com Sent: Monday, July 16, 2007 7:35 PM Subject: [Tube Type CB...
Check back with us in about 2 years on the Msg-1 and let us know how it's going. Larry ... From: Jay Ciampi To: tubetypecbradiocollectors@yahoogroups.com Sent:...
I'm in the process of getting my National NCX-3 into operating condition working on getting power to it, all I have is a mobil power supply and it draws 28...
I would've kept the battery charger in one piece and hooked the radio/charger cables together. Craig Harder <craigmharder@...> wrote: I'm in the process...
Thought of that but I would have to run anywhere from 25 to 30 ft. of wire heavy enough to supply it.It sits dead center of my house, I may go that route but a...
Everything in the charger except the transformer was wasted before I got it, you don't set the battery on top of it and set it on boost and walk off and leave...
Ours has 10ft cables, so we don't have that problem, but I'm thinking of the old one we haven't used in years, I have no idea if it works. Craig Harder...
