At 03:59 PM 1/27/2007, [EMAIL PROTECTED] wrote: >Interesting Mike, I like puzzles. To far away to see for myself. ;-) > > > >- What does the set on a 50 ohm dummyload? > > > >- Sure no crooked cables (lose shields are a common problem when you >move cables).
Oh yeah.. been there, been bitten more than once. Some BNCs (and Ns) are notorious if the cable got "stretched", and the center pin pulls back a bit so it doesn't engage the other side quite right. >- Sometimes it is interesting to see what a 3 or 6 dB attenuator >between the transmitter > > and the SWR meter changes in the SWR. I don not think it will > differ, but I wonder. A handy thing to have is some known mismatches (1.5:1, 2:1)... even a couple 50 ohm loads and a T connector. And, then, as Peter suggests, a couple 3dB pads or a 10dB pad can be a real useful diagnostic thing, especially when cascading multiple things. If putting in the 3 dB pad makes more than a 3dB difference, you KNOW something weird is going on. James Lux, P.E. Spacecraft Radio Frequency Subsystems Group Flight Communications Systems Section Jet Propulsion Laboratory, Mail Stop 161-213 4800 Oak Grove Drive Pasadena CA 91109 tel: (818)354-2075 fax: (818)393-6875 _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
