#Vlf receiver sensitivity spesifications plus#
One or two series 47 K resistors(s) plus a parallel termination-resistor of 1K suffices fine for interfacing the WR-3 joint 3.5mm audio-output jack (headphone level audio) of the WR-3 to the mic-level input of PCs and phones so you may employ their recording apps! (Stephen P. the lowest conductor closest to the "holder" of the plug (3.5 mm type/4-conductor) is the mic-level connection).
#Vlf receiver sensitivity spesifications how to#
about how to interface the WR-3 output jack to the newer PC/phone 4-conductor jacks that combine stereo audio outputs with a monoural mic-level input (i.e. Information for recording using Sony Mini-Disc (MD) recorders and memory-chip-recorders (like my Zoom H2 employing an SD-card) has been added to the Recording section. This WR-3 Receiver booklet/guide is also highly useful for all Natural Radio listeners due to its interesting information pertaining to Natural VLF Radio that I have been compiling since 1991.
This WR-3 Listening Guide was first begun in mid-1991 and updated as of THE POCKET-PORTABLE WR-3 NATURAL-VLF-RADIO PHENOMENA RECEIVER That would require me leaving it parked on a frequency and the temptation to turn that giant knob is just too much.WR-3 VLF Receiver Listening Guide / Natural VLF Radio Listening Guide But, I'll have to lug one of them from the house, in Atlanta, on my next visit to the U.S. I bought them several years ago at bargain-basement prices. I do have some more sensitive HP selective level meters I could use: a HP3486B, a HP3486C and a HP3746A. Below, 500 kHz there are no receiver sensitivity specifications listed. Possibly, this de-sensing is to prevent overloading on the AM broadcast band. The FT-1000 I have here goes down to 100 kHz but below 1800 kHz, its sensitivity specifications drop by an order of magnitude. I always wanted to hear a European LW broadcast station, but it never happened. I imagine there were a lot more beacons back then than there are now. Do you ever listen to whistlers and other 'spherics in the low kHz range?Īs a kid, in Dallas, I used to listen to the LW beacons on my trusty Heathkit GR-54. The Rycom 2174A is a cool receiver! It goes down to 300 Hz, if I remember correctly. We don't have a 'powerhouse' within a few miles so out she comes. It's set to activate automatically when the rig is tuned below 1.7MHz this to keep nearby broadcasters from desensing the front end. Haven't gotten a chance to try the Paragons out on anything below 160M, as there's a 20dB attenuator which needs bypassed first. The latter two have a tunable preselector which can be bypassed on demand and excel at sub-5MHz reception duties, as do the Drakes.Īlthough a number of my HF amateur transceivers offer LF coverage, I simply find them too noisy to use for general sub-500KHz work though they're fine elsewhere. Logged still more NDBs then the Hammarlund disappeared, traded off for some other gear.įast forward to several years ago when I finally got my hands on receivers which were actually capable of slicing through the atmospheric and man-made garbage to reach those often-in-the-mud LF stations.namely, the Drake R7 and the ITT Mackay Marine 3030AR/3031A. Next iteration of a longwave listening post was an HQ-180AC with a tunable LF converter ahead of it.
Traded the Realistic off for some other gear. Logged a fair amount of NDBs with the thing. I got started in longwave listening during high school, courtesy of a DX-160.