Dear Rick, there is a very good technical reason for the test. Far from being a [French word], the test checks a vital condition which influences receiver's ability to receive weak signals, when the
Your tests prove that Orion has low enough internal noise to be used without preamp in most situations, unlike K2. Leaving preamp off of course ensures best possible dynamic range, which may be signi
If the external noise moves the S meter sufficiently, one can use its indication which is reasonably accurate and does not depend on AGC THRESHOLD. If the test must be done by external instrumantati
Orion's AGC doesn't influence the signal to noise ratio significantly (which is very, veru good). It mostly influences the perceived audio volume. Therefore, the threshold value is not critical. Star
This cannot be accepted without an investigation, explanation, or similar. Although IMD measurements cannot be expected to be repeatable within a dB, this is simply too much to be accepted at a face
Exactly so. Orion's receiver is certainly not a noisy one. It's noise figure is very respectable, with both preamp on and off. 73, Sinisa YT1NT, VA3TTN
AGC is inactive during "hang" time with gain held at fixed level determined by the signal peak at the start of "hang" time. Benefit is twofold: * constant gain eases the job of our neural system, in
Orion's AGC Threshold control is useful for avoiding AGC action on noise peaks. Such an action tends to intermodulate a weak signal with noise, significantly reducing readability. The same benefit wa
This ensures that you transmit exactly on his frequency. That normally means that he hears you at the same tone as his sidetone. Filters that are not enabled will never be used. Out of those which ar
Use "Auto". The 2.4 kHz filter used in addition to a similar DSP filter will significantly reduce the bandwidth. Measured bandwidth is 2.174 kHz at -3 dB, and the filter is practically flat to ~ 2.0
The test is both valid and vital in any environment. What it says about gain is of very little importance. What matters is: internal RX noise vs. external noise. And many of us are really interested
A test of Orion's external CW keying [Please read using a fixed with font such as Courier New.] Introduction == TenTec's Orion is being described as having state-of-the-art CW keying. ARRL's "Product
A test of Orion's external CW keying [Please read using a fixed with font such as Courier New.] Introduction == TenTec's Orion is being described as having state-of-the-art CW keying. ARRL's "Product
My post appears in the archive: http://lists.contesting.com/archives/html/TenTec/2004-02/msg00845.html but I didn't get it by email. This happened once before. Why? Length or contents? 73, Sinisa YT1
Yes, I've also found power setting accurate and meter way off. But this time I observed meter continually fluctuating between readings of 0, 15 and 60 W, while the actual RF output did not fluctuate
Sory for the spam - somehow I haven't [yet] received a single copy of the message, although other messages are arriving continually. 73, Sinisa YT1NT, VA3TTN
I don't think that's "all that's needed". Here's what's actually needed. Upon PTT closure the transmitter must get ready to send CW code before the first keying pulse arrives in order to avoid choppi
A six-page PDF file (40 KB) titled "USING ORION'S RECEIVER" is available for download from my web site: http://www.geocities.com/va3ttn Topics covered include: * initial adjustments, * setting the op
I have made a mistake by blaming additional amplification for degrading IM performance, without any detailed insight. Just opened schematic and the box itself and verified that signal path is as foll