I'm sure that this is true. The Pegasus switches in a LPF that is only used for 60M. Duane N9DG -- ____________________________________________________________________________________ Boardwalk for $
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 __________________________________________
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 _____________________________________________________________
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/
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 _____________________________________________________
Why in the world would you want to spend $6K for 6m??? For $6K you can buy a lot of transverters and amplifiers for a lot of bands and still have plenty of $'s left over for antennas. Duane N9DG ____
I agree. I have a 765 and an Omni VI here. When conditions are rough the Omni wins hands down. With lots of atmospheric noise the IF filters in the Omni are not nearly as objectionable as the filters
Almost but not quite. In the case of the Corsair the 1st mixer output feeds more or less directly into the 1st IF (9 MHz) filter. In the Corsair II there are two crystal filter elements that then fee
Gonset beat Icom's 756 by ~40 years ... http://www.rigpix.com/gonset/commander.htm Hammarlund by ~40 years ... http://www.rigpix.com/hammarlund/sp600jx.htm Hallicrafters by nearly 50 years ... http:/
Yepp, or as I like to think of it, "serious fun". And in the case of a contest where you don't have piles and piles of stations to wade through then you better have a means to keep tabs on some prett
If you don't need the portability and/or FM coverage I'd buy a Down East Microwave, Elecraft or possibly an SSB Electronics (if you have the dollars) transverter instead and add it to the Corsair II.
I don't know about that, +8.5 dBm at 2 kHz (where it matters most) looks pretty darn good to me. The FT-2000 is only -19/-22 dBm at that spacing per the ARRL test results. And the +13 dBm at 20 kHz i
I just looked through a few other QST reviews to get the 20 kHz spacing (20M band) IP3 results: Orion II +21 (preamp off), +10 (preamp on) FTDX-9000D +27 (preamp off), +15 (preamp on) IC-7800 +37 (pr
FWIW the ADC's in the Orion's are a AKM AK4524 part number (per the schematics I have). That is a 24 bit ADC. And it is the ADC bit resolution more so than the DSP processing bits that will determine
I suppose if you don't mind losing the SSB capability of the Corsair you could substitute the 2.4kHz wide 1st IF filter with either the 217 (500hz) or 219 (250hz) 9MHz filter. Would not likely do muc