The extra filters add nothing unless you have bad out of band QRM. A better IF filter can help with out of band QRM??? What do you mean by out of band QRM? I would think that any QRM from "out of ban
You can see how S-meter readings would be quickly rendered meaningless as they all glumped together. S-meter readings are already virtually meaningless.
S-meter readings are already virtually meaningless. Yes, but what worries me is that almost all the time using the same antenna. my Argo 509, Triton-IV digital, Drake TR-5, Kenwood TS-430s and R5000
Hi Jim, When I started as WN6CFF in June 1970, my Hammarlund Super-Pro BC-779 had an S meter. It only goes up to 9 and it takes whopping signal to do that. Only VOA, Radio Moscow and Radio Nederland
Hi Jason, Since it only happens on 160 meters, I would suspect Y1 on the XTAL OSC. - L.O. MIXER BOARD (81595). That is the 160 meter band select crystal. It is supposed to be "locked to a precision r
Hi Jason, hi - just wondering by chance do you know where this board is? I am looking at the pictures in the manual and can't find it. I don't see it in my manuals either. So it must be under another
Hi all, I am curious about this statement: Interestingly, Stan at Ten Tec was reading the list and also replied moments ago. He said that the Paragon can not receive true FSK and that using the offse
Hi Bob, Do you use the adjustable sidetone while operating, or just set it the way you like and leave it? DE N6KB This thread prompts me to remark on a feature of the Orion that as a cw op I've come
Hi all, Thanks for the responses about the adjustable sidetone on the Omni VI. Of course we all have our preferences and some may have reasons other than just personal preference for their choice of
So much for the somewhat misleading QST statement regarding IMD..."the best we've ever seen". Bill, I'm sure it is the best they've ever seen in a FT-9000. DE N6KB
I have repaired dozens of GE Mastr II 100 Watt UHF PAs, and a few VHF ones too (the VHF ones have reverse power protection and do not fail as often). I have opened up the PA transistors (not recomend
Hi Phil, The amplifiers I was working on had 4 final PA xsistors. All four were driven from a single power divider and their collectors fed a single power combiner AND all four had a common bias. The
Where do you measure the rise time? When I was in the oldsillyscope calibration business, we measured rise time of the leading edge of a square wave as the time between 10% amplitude and 90% amplitud
Hi Bob, Thanks for making the measurements and posting your results. I would like to know what really is the right way to measure rise time of a CW keying envelope. I cannot see how measuring from 0%
Hi Lee, Rise time is actually a proxy for bandwidth, and I think this is the real parameter we should be measuring.... You're right about bandwidth being what we really want to know. The problem is i
Getting an accurate measurement of occupied bandwidth of a pulsed signal using a spectrum analyzer or a receiver is not as trivial as it may seem. That is one of the reasons for measuring the rise ti
I can now connect to it, but seems it is not connected to much else. Only 4 posts in past 8 hours, and one of those was my test. DE N6KB Yeah, it's back up now here as well. 73, Barry N1EU It works h
Hi Allan, You said (in part): band output info from the rig but it only tells me 40/30, 17/15, etc. Has anyone worked out a way to get separate band info for all the bands or perhaps a single output