what sort of pulse width are you able to get? working on ionospheric sounder for the back yard :-) -bob Bill Fuqua wrote: Interesting item. By coincidence I am working on a power tube tester today. I
Interesting. But what's an 'induction field'? -bob ac5e@comcast.net wrote: While we are on the subject of lightning, let me mention a friend. I went to school with Scott Bradley, more years ago than
Pete OK But I still don't understand how enough EMF can be generated to cause problems. I'm probably confused by the ratings they use on MRI machines. When I'm in the MRI machine and it's a 0.5T fiel
Been doing a little research, more to do, since posing MRI question. Seems there is a high background field which is held constant, for proton alignment. Then there is a time varying field, much smal
SteveWowsa! Thanks! I must be crazy! This is just what I was looking for, without having to 'buy the book'. Might have to call doc friend on some of the medical terminology, but from quick skim just
old stuff is good too... I'm waiting for 'next generation' from TT. have old argonaut but for main station Happy with TR7/R7/Sherwood 7SP combo. stock numbers... NF -135dbm 100kc blocking 146db LO no
If you travel, it's a big deal. Built in 'universal' power supply is nice too. Yeasu FT101B was really nice for travellers. With the actual radio getting smaller and lighter, it will be nice if someo
Kc9cdt@aol.com wrote: OK, I'm confused (puzzzled). If ORION was designed for contesting AND weak DX work. THE WHY DID TT LEAVE OUT A KEY FEATURE? PTT FOR CW? I am currently interested in the DX capab
Sinisa Hristov wrote: N0KHQ@aol.com wrote: Increasing the IF Gain on the Jupiter increases the receiver sensitivity by about 20db. Such a thing would be possible only on a very bad receiver. I don't
Yes, I was just giving the PTT on CW guys a hard time. My external PIN switch is set up for sequencing :-) But, I've not seen a small external sequencer for use with older amps that do not handle the
Art Searle wrote: Lee wrote: If ORION was designed for contesting AND weak DX work. THE WHY DID TT LEAVE OUT A KEY FEATURE? PTT FOR CW? I don't understand why PTT is so important. Wouldn't QSK with a
Bob All amps do not handle key sequencing and some of us can build something for which a nice set of composite OZ's would be a better analogy than garden rollers. 73, -Bob ah7i Bob Henderson wrote: A
Bob Henderson wrote: Sorry I don't understand. Though I guess if I could understand your point, it may well be I would agree with it. What is it that you can build for which a nice set of composite O
Curious. How did you distinguish ground wave from other modes at 100 miles over salt water. 73, -Bob ah7i Stuart Rohre wrote: Paul, Ground Wave not there above 3 MHz? It is there, in fact an antenna
Stuart Rohre wrote: groups internationally. Some, such as the CFA are controversial, others obey all the equations of Maxwell and have been efficiency proven such as Ouch, that's too funny... -bob __
running full wave 80 m vertcal plane loop here 30' feed and one vertical side of loop about 15' from rig fed in center of 33' vertical section loop is 33' x 102' rectangle with bottom wire avg 20' ab
I have an ADSP2106x EZ-lab, rev 1 ISA board. It requires a full length 16bit ISA slot. If you've any interest in messing with DSP code on parent of chip in the Orion, here is your chance. Board has a
Stuart Yes, but there is also tropospheric ducting, atmospheric refraction, and scattering. Ducting and atmospheric refraction are pretty common, specially over the ocean. Was wondering, in your expe
Gary Hoffman wrote: Many tubes are cooled with finned heatsinks, which also double as shields. I'm sure many of you have seen this done. For that matter, many tubes have metal cases. Any idea if a 57
Ron Notarius WN3VAW wrote: Wasnt the SB-230 the allegedly mobile linear, or am I thinking of a different one? Also, I seem to recall it from the era of the late 60's and/or '70's, not the '80's. 73,