9/10/2023 0 Comments Seimac profind manual![]() It is probably best suited for use a man-overboard locater on the open ocean. As a terrestrial direction finder, its seemed worthless. Handy, cute, rugged, and worthless.Ĭomparing the Australian unit (the MK4) to the the Seimac is apples to oranges. One is a switched antenna direction finding system. (There is a reason the L-Per has such a big antenna array-its the right thing to do!) Switching the antennas back and forth at high speed results in antennas that are never fully "on"., and with unity gain or worse antennas, its not going to perform well. ![]() The MK4 is basically a receiver with a signal strength meter and a directional antenna. The antenna provides reception capabilities far in excess of the zero gain antennas used in the Seimac. The receiver has higher sensitivity, and does not suffer losses from using the switched antenna, phase shift method of direction finding. Another positive feature is that there is no directional ambiguity. ![]() I don't believe that the unit is FCC approved, since basically it is a hacked ham radio product. With the Diamond MAY 1000 antenna, it can do RFD over a wide range of frequencies, which can be pretty handy. DF'ing with Yagi antennas does not provide the high bearing resolution possible with a switched antenna system, but its simple and works at greater ranges and does not require extensive training and experience to do a fairly good job with.1 CSPAS-SARSAT SYSTEM DATA No December 011 Published by the Cospas-Sarsat SecretariatĢ CSPAS-SARSAT SYSTEM DATA No December 011 TABLE F CNTENTS Page Summary Status.1 LIST F FIGURES Figure MHz Beacon Population Trend.1 Figure Type of SAR Events Assisted by Cospas-Sarsat (January - December 010). Well, this is all covered in much detail in the MK4 threads, but yes - they do.Figure 3 Figure 4 Figure 5 Persons Rescued by Type of SAR Event Assisted by Cospas-Sarsat (January - December 010). The main reason is that the MK4 converts the signal strength to an audible tone so that you can hear the difference in the strength as you sweep the beam side to side. No needle to watch, so you are focusing on your bearing the entire time. The Sniffer also has 9 self attenuating steps that automatically kick in as you get closer and closer - so no more sensitivity knob to twiddle. I find myself more engaged with the surroundings visually and considering terrain and obstacles more than worrying about operating the unit.įurther, the Sniffer is MUCH lighter and smaller than either L-Per - making use, transport, and storage much easier. I really can't say this any stronger - I did extensive field tests with the old and new L-Per, the Seimac, and the Sniffer and the Sniffer won by every metric I could fathom with the one exception that it's tougher to obtain. So I asked to de-necro this thread since the Gods of Karma have seen fit to issue me another "No-find", and But once you have it and spend some time with it, you will assuredly wonder what took you so long to get it. ![]() I can report and confirm, it's still useless junk, which is the only reason it was available to issue to my unit in the first place. I will say, however, it does make for nice "high-tech action shots", assuming the viewer doesn't know that the device isn't turned on. Interestingly I found an outfit called MetOcean still manufacturing a similar device for buoy and other marine location It barely picks up a signal even in close proximity to a beacon, and at the highest volume you can barely hear it. ![]() That looks like the same case and a similar faceplate (inverse colors). I didn't spend a lot of time looking into it, but it appears that Seimac and Novatech and MetOcean are all related companies. ![]()
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