receiver ratings. I hope we can maintain this in the future! Not for the image rejection and K2 case (<9 MHz) is even worse then Orion (18 MHz)! Once upon a time Collins made a good HF receivers wit
http://antennspecialisten.se/~sm5bsz/dynrange/intermod.htm This is a good EU reading for the explanations of IMD3 deviations. 73 de Mario, S56A, N1YU _______________________________________________ T
crashed yet..... Same case here! Remarkable performance for such a complex software product. I had two hardware memory errors recently... 73 de Mario, S56A, N1YU ____________________________________
Each crystal has series and parallel resonance which makes 8 pole filter! It is difficult to achieve 1 kHz filter shape factor better then 1:3 at 9 MHz. 73 de Mario, S56A, N1YU _____________________
Others also pointed on specialist Inrad filters but they come at the price! DSP takes care of final shapes and audio must be tailored accordingly. 73 de Mario, S56A, N1YU ___________________________
I am still in shock as I expected XP level of performance from Bill Carter's NT just like VAX VMS was a good product! Last time I had memeory errors was when developing my own 100 MHz FPGA board...
Clinton ;-) I guess I was close enough for 58 years OM :-) Obviously I like the above two USA Presidents. To KB3MM> Next October I'll celebrate 20 years of online contesting on homemade PDP-11 under
myself. I learnt Pascal in order to write my own contest program in early 80's. I can see that N4PY also escaped from hardware to software :-) To KB3MM - I used DEC T-11 IC and made PC with 8 bit bu
You forgot to mention an important detail in your excellent story. Wider filter is required for efficient noise blanker operation. This was mandatory in the Cold War days of powerfull "Woodpecker",
suggests, I would be able to perceive it. Pilots are trained to trust instruments and not their eyes! There is a lot of tech and psyhology involved in full BK CW. Initial key closure has to change i
with settle time than it does step size. The problem you described is very annoying if PLL overshoots. The ears easily detect about 1 Hz tone difference. IC-745 was prone to that, IC-735 uses audio
at full power. It might be software bug or mixed-up PTT and KEY lines :-) It happends to me if I swap RTS and DTR on PC COM. 73 de Mario, S56A, N1YU _______________________________________________ T
And less offensive against JA products! If you would buy one of their radios for 3K5$ with all the teething problems Orion has, you would probably nuke them again... 73 de Mario, S56A, N1YU ________
multitude of contest programs except that the calls have to be entered by the keyboard, not by the paddle. My contest program has paddle input since 1984 as I use only two fingers even on keyboard :
inputs. I sincerely hope so as they failed few years ago when W4AH was heading yet another "Buy American" initiative. JA have cultural problem to admit to any mistakes with their products as part of
The Orion "Amp Key" line will go to ground about 20 milliseconds before the Orion actually transmits a signal. It will then stay ground for up to a one second delay after transmit finishes. This dela
sending characters to the Orion via the comport. My Orion control software uses this function to run a CW keyboard. Software CW and PTT seems to be trendy! N1MM Logger uses K1EL keyer, Writelog has
There used to be 3 ways to transmit CW: 1. Press MOX or SEND switch on radio's front panel 2. Activate PTT (count to 3 both ways) 3. Press KEY and pray. TT rigs are obviously intended for the faithf
behaviour.. QSK puts a lot of strain on the operator at poor S/N ratios. The only justification for QSK was given to me by W0UN who claimed that he could hear his echo on 10 m while rotating his big
in reducing the clicks and sometimes removing them completely by increasing AGC threshold, which I guess prevents the AGC system from trying to ramp the noise up to full output between character ele