Any S meter indication above S-0 simply means that the automatic gain control has reduced receiver's gain, usually resulting in reduced sensitivity and degraded RX noise figure. This simple fact is f
What makes you think it's a "phase" noise, as opposed to other types of noise? 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http:/
The length of Orion's DSP filters is insufficient for bandwidths below ~300 Hz, and ruins performance below ~180 Hz. There are probably also some computation inaccuracies. The 100 Hz DSP filter is a
Very useful discussion with measurement results and winding data, by WF3T: http://www.k1ttt.net/technote/airbalun.html 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec m
14 dBi as in 5-6 dB over dipole? 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
A half wave dipole has +2.15 dBi in free space. Is the quoted +14.7 dBi also a free space value? 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@con
Orion makes sense of things that nowhere else make sense :-) 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.
Aluminium provides more than adequate shielding against both magnetic and electric fields at shortwave frequencies. But plastics do not, and Orion's CPU, DSP's, AD and DA converters, front panel LEDs
At 60 Hz or audio frequencies aluminium is not effective in shielding against magnetic fields. However, at radio frequencies it works very well, provided that the circuit to be protected is completel
Adding attenuation has no influence on dynamic range. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mai
This applies to a coax in exactly the same way as to an open line. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.cont
It's interesting to note that the foundation work, J.C. Maxwell's "A Treatise on Electricity & Magnetism" used metric units exclusively back in 1873. 73, Sinisa YT1NT, VE3EA _________________________
There is no way of turning Orion's AGC OFF. "AGC OFF" position actually engages the maximum AGC action. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list Ten
One more word of caution: most plastic ladder lines use copper clad steel conductors. Such lines are only suitable for low SWR applications, and in this respect they behave more like RG8 coax than li
For best multi band operation - yes. 600 Ohms. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/li
A dipole cut for EU SSB band can be used on CW with two coils of ~2 uH each inserted in series with wire legs. Coils can be safely short-circuited for SSB by ordinary small 16 A relays. Tested in YU
Following the recent discussion of open wire feedlines, I've compiled a 3-page PDF with some useful details. The 70 KB file can be downloaded from: http://www.geocities.com/va3ttn Basic definitions a
The tables and the formula they are based on (may be found in ARRL Antenna Book) are valid for any length of line, and any degree of loss, provided the line is uniform. I was wondering just the same
Hi Martin, Actually, I did the math with intention of proving that the formula is wrong :-) The formula represents just a limit of accumulated loss caused by an infinite number of two-way reflections
It is a myth that TenTec radios can deliver full power to unmatched loads. Absence of SWR foldback is far from being sufficient for such a goal. 73, Sinisa YT1NT, VE3EA ______________________________