A test that would be interesting to see is if the behavior of how the CW signals tune behaves the same way when the mode switch is set to SB-N and then SB-R. They should behave differently from each
There seems to be some confusion and conflation of these two RX performance measurement parameters in recent threads. They are NOT the same thing at all. I'm seeing people write "IP3" (Third Order In
A radio performance testing item that I think has been ignored for far too long is its in-band or recovered audio cleanliness. Nobody is or has been consistently testing this that aspect of radios th
If you put the 217 in the slot on the PBT board it will not work. The 217 is a 9 MHz IF filter, the PBT board of the Corsairs use the 28# series of filters (6 MHz) not the 21# series.. You could get
Yes the Flex firmware is closed source. But the "firmware" control is confined to the very low level hardware aspects of the Flex radio models. It only provides control over band segment access (FCC
No it cannot. The 2.4 kHz filter in the 580 is @~6.3 MHz. The 21x series filter on the Corsair's NB board is 9 Mhz. Also the 2.4 kHz filter in the 580 is integral to the IF amplifier board. So it is
For my transverters here I went with ~30 dB atenuators. They were very easy to make. I just bought some 300W dry dummy loads from Vectronics. Then drilled a hole under the SO239 for BNC connector. Th
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
The Corsair (560) and the Corsair II (561) share the same 9-6-9 MHz IF mixing scheme. The active devices in the signal paths look to be mostly the same. The 1st RX RF amps being 2N3866 in both models
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
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 and Flex-5000's being cases in point. FWIW it hasn't been the "s
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