Search found 8 matches

by radionut8888
Sat Nov 27, 2010 9:46 am
Forum: General Discussion
Topic: Reducing Magnetron Voltage
Replies: 26
Views: 3445

Re: Reducing Magnetron Voltage

This may help explain what is happening in your microwave oven. The magnetron is a crossed field microwave tube. The magnetic field and electric field are at right angles to each other. The electric field travels in a circle about the axis, and because of the physical size and configuration of the c...
by radionut8888
Sun Oct 29, 2006 5:09 pm
Forum: General Discussion
Topic: Coil Question
Replies: 10
Views: 2290

Exitation Inductance

Lenp: The frequency of operation is a hint. By winding the primary with 4 strands of wire side by side, the exitation inductance is reduced. From an inductance standpoint, it's like four inductors of the same impedance in parallel. This allows a faster rise time of the switching waveform thus reduci...
by radionut8888
Mon Oct 23, 2006 10:28 am
Forum: General Discussion
Topic: What do you call this, SWR or what?
Replies: 4
Views: 1416

Standing Wave Ratio (SWR)

The Standing Wave Ratio is a number representing the ratio of RF power travelling down a transmission line (coax) to a load to that travelling back from the load to the source. Generally, no antenna is SWR free but most accept and radiate the power sent to it well. If an antenna collapses or the coa...
by radionut8888
Thu Aug 17, 2006 11:14 am
Forum: General Discussion
Topic: ce-31 manual
Replies: 12
Views: 3252

All Respondents

Thanks for all your help. For a while, it looked like a dead and, but as advised, I kept my eyes open on Ebay and just picked up a manual for $30.00 US, so now I can check out the CTCSS tone generator in the service monitor.

Again, thanks to all of you who helped in my quest
by radionut8888
Sun Jul 23, 2006 3:17 pm
Forum: General Discussion
Topic: ce-31 manual
Replies: 12
Views: 3252

CE-31 help

Robert:

Thanks for the help. You've got the gist of the situation right. I've tried Ebay though not "want it now". I'll try that. Google was not productive. Ahh Well...
by radionut8888
Wed Jul 19, 2006 5:28 pm
Forum: General Discussion
Topic: ce-31 manual
Replies: 12
Views: 3252

Cushman CE-31

THe cushman CE-31 is indeed a piece of test equipment, not a motor scooter. It is a service monitor that allows alignment of a radio receiver's circuitry and also a transmitter's circuitry. It's used largely for two way radios and repeaters, etc. I need the manual to understand the limits of this in...
by radionut8888
Wed Jul 19, 2006 10:37 am
Forum: General Discussion
Topic: question about CRT televisions
Replies: 9
Views: 3265

Vertical deflection

The vertical trace is usually magnetically generated by a set of coils around the base of the neck of the crt (as is the horizontal deflection). Your symptoms point to an intermittent wire, connection at the deflection coil, or a bad trace/connection at the pcb. Usually, the horizontal trace experie...
by radionut8888
Tue Jul 18, 2006 9:14 pm
Forum: General Discussion
Topic: ce-31 manual
Replies: 12
Views: 3252

ce-31 manual

I'm trying to find a manual for a cushman CE-31 service manual. So far, all searches on the net are negative. Can anyone help ?