Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: LowFER


Related Topics

In the News (Sun 22 Oct 17)

  
 Altair's YWK Lowfer Page
Lowfers are folks who experiment with radio communications at unusually low frequencies.
Medfers - Kin to lowfers, they operate on the edges of the AM broadcast band under FCC part 15.
When you are proficient at this, you can use the same techniques and hardware to listen for Lowfer beacons.
www.altair.org /lowfer.html   (475 words)

  
 LowFER Transmitting Antennas
For LowFER antenna modeling, I typically set the segmentation density to a fairly high value like the 400 segments per halfwave shown in the screenshot, because the individual wires making up the antenna are such a small fraction of a wavelength long.
The "conservative" definition of a legal Part 15 LowFER antenna is used, meaning that the sum of the height (H) of the antenna plus the length (R) of the radials is constrained to a value called Hmax.
This is accomplished with latching vacuum relays for the HF feedline and with a homebrew isolation transformer on the 2-meter feedline.
www.mlecmn.net /~lyle/models/lftxant.htm   (7036 words)

  
 ct_lowfer_archive
Determination of compliance with the 20 dB attenuation specification may be based on measurements at the intentional radiator's antenna output terminal unless the intentional radiator uses a permanently attached antenna, in which case compliance shall be demonstrated by measuring the radiated emissions.
The word LowFER is a pseudo-acronym that stands for Low Frequency Experimental Radio and the basis of this facet of radio experimenting is based on FCC rules 15.217 (see sidebar) which allow unlicensed operation within these rules.
Over the years, I have heard several LowFERs (other than my own signal.) As far as I know, none of these beacons are still on the air (at least at their original locations.) All of the recordings were made at approximately 0800 UTC on 18 December, 1987 (the date is MST.)
www.ussc.com /~turner/ct_lowfer_archive.html   (1589 words)

  
  LF Loop Antennas
They're compact, don't need to be high and in the clear, and their directional characteristics can be used to null out local noise or strong interfering signals.
A typical multi-turn, tuned LowFER loop may have an inductance of a couple of millihenries and a Q of 50 to 100.
Using the "Universal" preamp in the LF mode, LowFER signals are within 1 or 2 dB of the level I get with the loop parallel-tuned and with only a few feet of total coax run between the loop, preamp, and receiver.
users.aol.com /lwcanews/longwave/lf-loops.htm   (1117 words)

  
 Club Meeting
The loading coil required for a LowFER antenna typically is the size of a 5-gallon bucket.
LowFER transmitter circuits can be as simple as a crystal oscillator and CMOS divider with a complementary pair of plastic switching transistors in the final.
With a few notable exceptions such as the amazing reception of California LowFER "Z2" in Hawaii about 20 years ago, distances for one-way CW beacon reception have rarely exceeded 1000 miles, and only a few two-way contacts have been made at 700 miles or more.
www.brainerdham.org /2003/2-27-03-meeting.html   (1381 words)

  
 [No title]
Roger's LowFER beacon RM is still functional although it's been off almost all summer." "I spent the last week of August as an instructor at the Courage Center's Handi-Ham Radio Camp near Lake George, MN, about 80 miles northwest of here.
It seemed that all LowFER beacons broadside to the bridge went up 15-20 db while stations in line with the bridge suffered signal strength degrading by the same amount.
Those are about the only LOWFER beacons running in this area this summer." -If you've been looking for Jill Dybka's home page lately, it's now at a new URL: http://funnelweb.utcc.utk.edu/~jtdybka/radio.htm She also has a new e-mail address: jtdybka@utkux.utcc.utk.edu.
frodo.bruderhof.com /longwave/notebook/n43.txt   (2274 words)

  
 The Noise Floor: 1750 Meter Resource Page
Lowfers are a close knit group of radio experimenters who operate beacons to explore the mysteries of low frequency propagation.
Lowfer Antenna Introduction Good, practical article on the construction of a Lowfer antenna by Ed Phillips.
Lowfer Loading Coil Construction Ralph, W5JGV who is part of the new Part 5 experimental group, operating under callsign WC2XSR/13 offers this web site devoted to how to construct a loading coil for the lowfer band.
highnoonfilm.com /xmgr/links.htm   (1130 words)

  
 <B>A LowFER Receiver Using a "Software" IF</B>
Most LowFER operation today utilizes weak-signal modes that require a computer to decode, or at least display, the signals.
To put together a respectable LowFER receiver, I wanted a DSP IF that would tune from about 10 to 20 kHz, with a fairly narrow audio filter and a "comfortable" BFO pitch.
Of course, the computer doesn't care what the pitch of the audio output signal is, but I like to listen to the few remaining CW beacons.
www.qsl.net /k0lr/SW-RX/sw-rx.htm   (8640 words)

  
 Optimizing the 'Simple Beacon' Tansmitter - Class-E LowFER
My LowFER beacon, MPM, has been on the air for some time, utilizing a dual MOSFET push-pull transmitter design.
Despite it's complexity I've been quite proud of the circuit, which I considered to be hard to beat for DC to RF efficiency.
Probably the simplest way of doing this is to connect the antenna and loading coil to a tap on the tank inductor.
www.ka7oei.com /mpm_class_e.html   (1661 words)

  
 LowFER and MedFER folks from the late 80's - Stephen P. McGreevy, N6NKS   (Site not responding. Last check: )
LowFER and MedFER folks from the late 80's - Stephen P. McGreevy, N6NKS
LowFER and MedFER Experimenters from the late 1980's
Dedicated to Cliff Buttschardt, W6HDO, K7RR (SK), Lowfer "HDO," "C"-maritime mobile lowfer
www.auroralchorus.com /lowfers.htm   (139 words)

  
 The Noise Floor: 1750 Meter Resource Page
Just has Lowfers had begun to embrace QRSS and even QRSS(S) has the weak signal modes of choice, a new challenger to this throne may have been born.
In this test, Lyle used a loop of the character "L" and introduced a random sampling of typical LF noise to test the modes.
This amazing reception exceeds the "over land" distance record for a Lowfer beacon and is perhaps the 2nd most distant reception ever.
www.highnoonfilm.com /xmgr/updates/wolf.htm   (975 words)

  
 LOWFER and WC2XSR/13
LOWFER and WC2XSR/13 on 166.5 KC QRSS and 168 KC LSB
NOTICE - The authorization for WC2XSR has expired, and the project has come to an end.
First LOWFER Signals Received at this QTH- 04/14/02
w5jgv.com /lowfer_166r5.htm   (253 words)

  
 ct_lowfer_archive
Being non-licensed operation, most LowFERs (many of which just happen to be amateur radio operators) use a few letters from their amateur callsign, or their initials.
I later moved again but did very little LowFER operation as the layout of the yard, available trees, etc. precluded putting up a reasonable antenna and laying a decent ground.
Former (?) LowFER Don Pomplun (K2BIO) put it well: "A friend asks why I would be interested in listening to weak stations that in fact don't even have anything to say.
www.ka7oei.com /ct_lowfer_archive.html   (1589 words)

  
 [Lowfer] ARRL Letter, VLF
Incidentally, had you read that issue, you would have seen that I was one of the invited speakers at the RSGB LF Forum in October '98 in Windsor, UK.
In my short speech, I specifically gave credit to the US Lowfers for the remarkable results they were able to achieve within the FCC limitations imposed upon them.
if these guys come to believe that Lowfers can > contribute meaningful input to their test, they may invite you to > participate, to the extent of advising when their testing is going on.
www.rf.org /pipermail/tacos/1999/000903.html   (1224 words)

  
 [Lf] [Fwd: [Lowfer] NDB Coils]
Spacing > the turns by an amount equal to the wire diameter, which is a good rule > of thumb for obtaining maximum Q with solid wire, would reduce the > inductance to about 50 uH.
Since it takes 2000 uH or more to resonate a > typical LowFER antenna, you'd need to connect quite a few of these coils > in series to make a conventional loading coil.
One of them also has a small ferrite variometer > > in the center that is adjusted using a knob on the side of the cabinet.
www.amrad.org /pipermail/lf/2000q3/000652.html   (479 words)

  
 Albums: Chimp | Lowfer (Slow Records) by Tom Sheriff
Seemingly destined to tread water forever - without ever releasing a record - it is greatly heartening that they have now won a modest deal that their perseverance and charming music deserves.
A limited edition 7”single aside, 8-track mini-album ‘Lowfer’ is the first fruit of their studio labours, and an absolute delight of peculiarly British pastoral pop.
It’s gorgeous, and really should be lifted as a single, if only to showcase ‘Lowfer’ to territories still oblivious to Chimp’s off-kilter beauty.
cwas.hinah.com /webexclusive/?id=114   (376 words)

  
 Lowfer   (Site not responding. Last check: )
Zij gingen met z'n tweeën verder en vroegen Thijs om mee te bassen.
Lowfer maakte na het einde van band Little Fish een snelle start en hebben eind 2005 hun eerste Promo/Demo uitgebracht waarmee ze dit jaar vele podia's gaan veroveren.
Een swingende baseline, tricky gitaar riff's en een stevige drum; Lowfer.
www.lowfer.nl /bio.php   (208 words)

  
 LOWfer ops?   (Site not responding. Last check: )
I just got in a neat little lowfer transceiver kit from Dave Curry to beta test.
Wondering if there are any lowfer ops or beacons in the New England area before I go to the trouble of putting up some kind of antenna.
BTW, Lowfer band is 1350 meters, 160 to 190 KHz, 1 watt max input power to final, 50 ft dia xmit ant,max.
www.kkn.net /archives/cgi-bin/mesg.cgi?a=QRP-L&i=19960911.205301.5471.0.KD1JV@juno.com   (113 words)

  
 KD5UWL LowFER DXpedition 2004
This webpage details my first LowFER DXpedition that I plan to make an annual event.
A "LowFER" is a Low Frequency Experimental Radio beacon operated under the FCC's very restrictive license-free Part-15 rules.
For more information about the world of these low-power beacons see the homepage of the Longwave Club of America.
www.nutstreet.net /radio/lowferDXpedition/2004   (660 words)

  
 Lowfer, by Chimp (CD, £6.95)
Give us your opinion on Lowfer by Chimp.
If you would like more details about Lowfer by Chimp, fill in the form below and we'll get back to ya.
Jewel cases are the worst thing ever though and they really need to stop.
www.normanrecords.com /records/40956   (203 words)

  
 Re: lowfer RDF units ..........
Alternative > Area 51 > Re: lowfer RDF...
There are ferrite based loops such as sold by Quantum, MFJ, etc., that you can use with a shortwave radio.
Krackula wrote: > some of these maritime RDF units are probably an excellent and > economical RDF unit for those lowfer air beacons......
www.talkaboutalternative.com /group/alt.conspiracy.area51/messages/59174.html   (201 words)

  
 Lowfer Info Page
Lowfer is a mailing list (reflector) devoted to the discussion of Lowfer, the 1750m band (160-190khz), the European Lowfer bands and the United Kingdom's new 73khz band, as well as MedFer Activities in the 1600-1700 khz band.
To post a message to all the list members, send email to lowfer@mailman.qth.net.
Subscribe to Lowfer by filling out the following form.
mailman.qth.net /mailman/listinfo/lowfer   (294 words)

  
 [RESEND] Re: [Coco] COCO 3 for LowFER transmitter?
Considering that the original request was to see if a Coco3 could be used for a Lowfer beacon I suggests a frequency derived off the E clock.
I did alss mention it was like using a 16lb sledge to kill an ant.
There is no restriction on the > length of the control lines.
five.pairlist.net /pipermail/coco/2003-December/002184.html   (457 words)

  
 Web site of: k0lr
Listening for LowFERs, Part 2 WAVE files and pictures of LowFER beacons (QRSS spectrograms and WAVE files added 11/24/00 and 11/26/00)
"Lightweight" LowFER Verticals Two ideas for LF transmitting antennas that are relatively easy to erect.
A LowFER Receiver Using a "Software" IF A complete receiver using two ICs and the DL4YHF Spectrum Lab software.
www.mlecmn.net /~lyle   (532 words)

  
 ARRLWeb: In Brief
LOWFER beacon distance record set using digital mode: On February 21, Stuart Nelson, KK7KA in Reno, Nevada, reported receiving solid copy of a 1-W low-frequency beacon located near Aitkin, Minnesota, and operated by Lyle Koehler, K0LR, on 186.7 kHz.
It only took 192 seconds of the file to get correct copy." Nelson said it was his first try at LOWFER reception.
Missouri considering legend change on Amateur Radio plates: The Missouri House of Representatives is again considering replacing the words "Show-Me State" with "Amateur Radio" on Missouri's ham radio license plates.
www.arrl.org /news/stories/2001/02/28/4/?nc=1   (1857 words)

  
 [Elecraft] 136 kHz Band   (Site not responding. Last check: )
LowFER= Low Frequency Experimental Radio Other sources: David Curry, WD4PLI and his company did have built units for sale-- David Curry, WD4PLI, Build Your Own LowFER Transceiver, QST, April, 1994, page 26, shows a circuit and schematic for a 160 to 190 kHz transceiver and I think he sold a unit based on this article.
The Upconverter idea seems to be a better idea and would give better results.
Visit http://mailman.qth.net/mailman/listinfo At 09:56 AM 3/1/2002, n4so@juno.com wrote: >I would like to subscribe to the LowFer reflector.
www.ac6rm.net /mailarchive/html/elecraft-list/2002-05/msg00259.html   (480 words)

  
 LowFer Beacon WV
The Long Wave Club has a web site and a message board for exchanging reports.
To construct the "Lowfer Beacon", there are several steps that I followed.
First I had to construct the morse code Ider.
www.wa8ywo.com /LowFerbeacon.html   (328 words)

  
 W3EEE - Argo Plots   (Site not responding. Last check: )
The LF 'Part 5' stations are neither 'Lowfer' nor amateur stations, in a legal sense.
97), they did suggest LF experiments could be pursued under both Part 15 ('Lowfer' rules) and under Part 5 (experimental rules).
Quite a few took them up on the suggestion, braved the fearsome Dragons of Gettysburg, and have been granted Part 5 licences, mostly for operation in and around the *worldwide 136kHz amateur band*.
www.w3eee.com /argolive_3.html   (288 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.