Because in many cases it is the pass transistor itself failing (shorted) that is the failure mode which causes the overvoltage to appear on the output lead. Regulator failures from what I can tell ar
This very question is currently being beaten to death in the context of contesting over on the contesting reflector at contesting.com. Duane N9DG _____________________________________________________
These are options: http://www.downeastmicrowave.com Note that they are temporarily closed until June sometime as they are moving their entire buisness operation from NJ to FL. http://www.ssbusa.com/
The person responsible for the DSP piece of the K3 is from what I can tell an "outsourced" provider and not actually a member of Elecraft payroll. Ditto for much of the K3's hardware design team. A s
Oopsie on my part. I guess miss-understood Doug, KF6DX's status during the Orion's development. Excuse me while I go wipe this egg off my face... Duane N9DG -- "Ten-Tec Inc. Amateur Radio Sales" <sal
Hmmm, looks like I've been corrected again. But hey I do now have clearer picture across the board, so I don't need speculate quite as much anymore. Speculation sure can be fun though. I was aware of
Looking at the orignal Corsair mamual I have it shows the first mixer being made from 4 discrete MPN 3404's. As far as I know the CII's all used the monolithic quad. Duane N9DG ______________________
Oooopsie, I miss read my schematic. They are actually MBD 101's too. I'm road weary from the long drive back from Dayton. The take away lesson is: Don't read schematics when tired. Duane N9DG _______
In both the Corsair and Corsair II schematics I see a 2N3866 used for the RF amp stage. No MOSFETs anywhere in the front ends. Duane N9DG _____________________________________________________________
As far as I know this is normal. Mine has never shown S meter readings in the Ic position. Duane N9DG www.csm-gh.com/mytrike.htm<http://www.csm-gh.com/mytrike.htm> www.csm-gh.com/75thRepoDepo.htm<htt
I use the handy-dandy wire-sizing chart in the FAA AC43.13-1B (Chapter 11) publication as my guide. If it's good enough for airplanes it is good enough for my shack. I do use Chart 11-2 for *continuo
I'm sure that this is true. The Pegasus switches in a LPF that is only used for 60M. Duane N9DG -- ____________________________________________________________________________________ Boardwalk for $
Bingo. Those who can, will modify code, those who think they can will also modify code. Those can't won't. But in any case TT would continue to maintain control of the "official" factory release. Jus
-- "Dr. Gerald N. Johnson" <geraldj@storm.weather.net> wrote: the various ham audio cards for work fast The trend is to shift away from consumer sound cards for this purpose. The HPSDR Janus board an
NB - yes. Transverter port - No. NB perfomance/usefulness is debatable as most NB's are. The Corsairs do have a separate RX antenna port that is quite handy for split IF transverter configurations. F
The RX-320 and the Pegasus/Jupiter are conceptually very similar, but there are some really quite significant differences circuit-wise. The RX-320's analog signal path is this: 1. Antenna. 2. Single
Though the Corsair II and the Omni VI use a "monolithic" mixers in the first IF. Haven't seen an Omni V or Paragon inside to know what they use. I'd be surprised if the Jupiter is not just like the P
I assume the Jupiter is like the Pegasus where the incoming RX is routed throgh a diode switched set of filters (octave?). The TX low pass filters are bypassed when in RX. I never got the sense that
Yep, they all do the 2.5 kHz step for the first LO, then fine tune in the DSP. If I'm not mistaken the RX-330/331/340 use a 1 kHz step. Don't know what thier PLL is. If Sherwood ever tests the Pegasu
Last night I was digging into my RX-320 to address the "no antenna attached S-5 S meter reading" problem I've been seeing. I just happen to have the schematics up when the Jupiter vs. RX-320 question