It is true that some parts of Orion are not protected particularly well against RF currents. These include front panel, CPU, DSP, codecs and audio amplifiers. However, your choice of antenna is, I be
Sweep ADC produces 32768 samples at 8 MS/s in 4.096 ms. Following those 4 ms, Sweep ADC is completely inactive for ~2 seconds. Don't know why, but it's clear that any fast changes are not related to
Orion (and Icom units, probably) doesn't do any scanning at all. A wideband IF signal is sampled at 8 MS/s, and its spectrum is computed. The problem comes from the fact that samples cover only 0.2
It's not Orion, but will do well, particularly if you use attenuator and IPO to prevent S meter from reading above S9+10 dB on nearby frequencies. 73, Sinisa YT1NT, VE3EA
Morse timing has two aspects. Dit/pause ratio is very important and the value of 1 : 1 is actually optimal, i.e. it transmits the maximum possible "amount of information" for the given average power.
The simplest way is to use a 100 W 30 dB attenuator. You can find them on eBay at reasonable prices. If you want to transmit actual waves, then some form of coupler can be used. You could try an old
... Dynamic range cannot be fully described by a single number. Two independent numbers are needed to fully define both ends of the range (just like any other range). IP3 or dynamic range alone, or b
Orion's AGC works pretty well and your experience is probably caused by specific AGC settings at the time. For high QRN conditions you may consider reducing AGC hold time to 0, and increasing AGC De
Well, I have 100 kW Radio Nis on 711 kHz 3 miles away, and never noticed any problem with Orion (or Mk5). Although my Orion certainly has some problems (and I never hesitated to report them), strong
Bandwidths are approximately the same: INRAD 761 1913 Hz @ -6 dB, 3250 Hz @ -60 dB TenTec 218 1903 Hz @ -6 dB, 3171 Hz @ -60 dB Inrad data from the web site, TeTec data mine. 73, Sinisa YT1NT, VA3TTN
Has the art of software testing made any progress since Dijkstra's conjecture (almost 40 years ago) that it can only prove the presence of errors, but not their absence? 73, Sinisa YT1NT, VA3TTN
Signal path is as follows: * board A3: * first mixer (Q1-Q4) * amplifier (Q24) * pre-roofing crystal filter (X1, X2) * board A4: * source follower (Q17) * two stage amp with local AGC (Q13, Q14) * bo