There are two facts. 1. Default Orion gain is higher that default gain of FT1000. 2. Orion has flat audio response, while FT1000 rolls off from 1 kHz, reaching more than -10 dB at 2.7 kHz. This is th
Is Orion 2 schematic available? In particular, is the codec clock synchronized to the main TCXO now? It wasn't in Orion 1, which made diversity reception marginal. 73, Sinisa YT1NT, VE3EA ___________
Thank you for information, gentlemen. The frequency difference may be caused by firmware, even with all clocks locked to TCXO. The only reliable way is to look at the actual codec clock source. In Or
Yes, it's the same oscillator, but it's not used the same way. On both receivers, the received frequency is a weighted sum of two reference frequencies, but weighing factors are not the same: Fmain =
There are "FREQUENCY STABILITY NOTES" added on page 6, describing some abracadabra supposedly improving the frequency stability to that of the TCXO. This is also advertised on the Orion II web page a
How does one see it? 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
There is no need to use a hex editor. The RUF file is an ordinary text file in a well known S record format. 73, Sinisa _______________________________________________ TenTec mailing list TenTec@cont
This is normal. There is a theoretical minimum filter length for a given bandwidth. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com h
Orion I with V2.055 set up as follows: MAIN RX on ANT1 and VFO A, 3750 kHz LSB, 6 kHz roofing filter, BW = 2500 Hz, PBT = 0 Hz, 199 taps RF GAIN = 100, PREAMP ON, no ATTN A -79 dBm (S8 dB) carrier at
Did you provide a 3750 kHz carrier to ANT connector? 73, Sinisa _______________________________________________ Orion mailing list Orion@contesting.com http://lists.contesting.com/mailman/listinfo/or
Just loaded 1.373b5 and it appears the same as 2.055. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mai
By "S9" do you mean -73 dBm level or just "9" on the S meter? My test was done with a known level in dBm, preamp on, attenuator off. As my Orion was still open, I made a quick test by feeding 14 kHz
The following 100 Hz DSP CW filter response was measured with a calibrated signal fed directly to ADC input on A7 board. 156 Hz width at -6 dB 378 Hz width at -40 dB (sidelobe peak) 512 Hz width at -
That's essentially the audio filter's response, given that IF filter is much wider. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com h
Exactly. It is easy to verify that with V2 a strong carrier off-tuned to just become inadible is still causing S meter deflection and AGC action (with threshold set appropriately). 73, Sinisa YT1NT,
Our hobby, like other hobbies, is a social phenomenon, any technical contents there is just an excuse. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenT
FAST rate is only 250 steps per rotation, and SLOW amount to mere 62.5 steps per rotation, making it feel too much "digital" if STEP is 100 Hz, and too slow with 625 Hz per rotation, if STEP is 10 Hz
Was the step 4 measured with no signal audible, just the noise? 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesti