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Forum: Propagation

Line-of-sight, Skywave, Meteor scatter, Auroral, Sporadic-E, Tropospheric scattering, ducting, enhancement or refraction via inversion layers, diffraction and absorption. Feel free to talk about Propagation here.

  1. Question Estimating range of VHF

    Started by Marko55, Fri 30th Jan 2015 19:39
    100, 220, antenna, call sign, call signs, calling, cards, coax, conditions, contacts, cq, cw, data, digital, digital modes, distance, fm, ground, material, minimum, mobile, modes, motorola, operating, propagation, radio, satellite, software, ssb, system, uhf, vhf, website
    • Replies: 18
    • Views: 13,083
    Mon 7th Dec 2015, 03:28 Go to last post
  2. Transmission near the beach

    Started by KK6YTN, Sat 15th Oct 2016 20:37
    antenna, data, distance, ground, ham, ham radio, handheld, interference, operating, output, parabolic, portable, power, problem, radio, receiver, system, testing, thoughts, transmitter, usa, video, website, wireless
    • Replies: 12
    • Views: 4,589
    Fri 18th Nov 2016, 20:43 Go to last post
  3. Longest DX to date

    Started by MitchellB, Wed 6th Dec 2017 13:51
    100, 15m, 20m, 220, 2m, 40m, amp, antenna, coax, conditions, cw, data, dipole, dx, g5rv, ham, ham radio, hf, islands, modes, mw, phone, power, radio, shack, transmitter, wspr
    • Replies: 12
    • Views: 6,605
    Sat 13th Oct 2018, 04:48 Go to last post
  4. RFI NW Scotland Revisited - OFCOM and RFI

    Started by daveincaol, Mon 16th Apr 2012 18:16
    2m, 6m, antenna, battery, cb, connect, distance, ebay, electricity, equipment, faq, ft-817, gps, ground, interface, interference, led, license, noise, ofcom, portable, problem, psu, radio, radios, receiver, results, rfi, short, uk, video, website, wire
    • Replies: 11
    • Views: 8,734
    Wed 18th Apr 2012, 19:42 Go to last post
    • Replies: 10
    • Views: 1,266
    Wed 17th Jun 2020, 12:24 Go to last post
    • Replies: 9
    • Views: 9,612
    Thu 7th Mar 2013, 01:22 Go to last post
  5. RFI - NW Scotland

    Started by daveincaol, Tue 3rd Apr 2012 12:50
    100, 20m, 2m, antenna, battery, equipment, hf, licence, license, mw, noise, ofcom, portable, power, problem, radio, rfi, space, system, uk, video, website, wire
    • Replies: 8
    • Views: 7,401
    Mon 16th Apr 2012, 13:42 Go to last post
  6. Anomalous propagation across HF range, 11 August, 2015

    Started by W8BFT, Thu 13th Aug 2015 02:17
    100, 10m, 2015, 20m, antenna, atu, audio, calling, conditions, cw, dipole, dx, hf, iaru, ideas, mobile, mw, network, power, propagation, qso, qsos, qth, radio, short, ssb, sw, vertical
    • Replies: 8
    • Views: 7,349
    Sun 16th Aug 2015, 10:59 Go to last post
  7. Foliage Blockage?

    Started by druid, Mon 8th Aug 2011 18:10
    15m, 20m, 2m, 40m, antenna, dipole, ground, ham, ham radio, hf, internet, problem, propagation, radio, repeater, sw, uhf, vhf, wire, wires
    • Replies: 7
    • Views: 10,235
    Wed 30th Jul 2014, 02:25 Go to last post
  8. Really bad QRM

    Started by normd, Mon 28th Jan 2013 17:43
    10m, 2013, 4:1, antenna, balun, battery, buzzing, dipole, display, ideas, interference, led, noise, ofcom, power, problem, psu, qrm, radio, video, wire
    • Replies: 7
    • Views: 10,812
    Mon 13th May 2013, 19:34 Go to last post
  9. Plasma TV RFI wav files?

    Started by ab1jx, Wed 10th Nov 2010 15:28
    • Replies: 6
    • Views: 10,376
    Sun 15th May 2011, 04:09 Go to last post
  10. Did anyone else get far distance last night on 2meter?

    Started by Delao_16, Tue 26th Aug 2014 14:50
    100, 2m, 2meter, antenna, calling, conditions, cq, d star, distance, fm, germany, ham, ham radio, license, lift, mobile, parts, power, propagation, qso, radio, repeat, repeater, repeaters, tropo
    • Replies: 6
    • Views: 4,918
    Fri 29th Aug 2014, 17:28 Go to last post
  11. US Midwestern Propagation

    Started by Operator, Thu 1st Oct 2015 08:41
    antenna, cw, d-star, dc power, digital, drake, dsp, dx, equipment, fm, forum, ham, handheld, hello all, hf, kenwood, led, modes, power, problem, propagation, radio, receiver, rtty, short, shortwave, wire
    • Replies: 6
    • Views: 4,668
    Sat 3rd Oct 2015, 19:14 Go to last post
  12. Dealing with obstacles. Like Mountains.

    Started by apamburn, Wed 18th Nov 2015 03:21
    2015, 220, 80m, antenna, call sign, forum, ground, ham, handheld, hf, license, net, phone, problem, propagation, radios, repeater, repeaters, short, ssb, uhf, vertical, vhf
    • Replies: 6
    • Views: 5,073
    Fri 11th Aug 2017, 18:40 Go to last post
  13. Unofficial greyline calling frequency

    Started by om1ava, Wed 1st Nov 2017 17:15
    80m, calling, contacts, cq, dx, full, homebrew, ht, licence, modes, net, operating, propagation, qsl, qsos, repeat, repeater, results, ssb, uk, vertical
    • Replies: 6
    • Views: 2,841
    Thu 2nd Nov 2017, 14:21 Go to last post
  14. How come I only pick up Italian and the area stations?

    Started by 4Z7JAD, Sun 28th Nov 2010 21:05
    100, 2 meter, 2m, 7mhz, antenna, arrl, buy, callsign, cw, dipole, distance, hf, radio, receiver, russian, transceiver, transmitter, travel, uk, wire, yaesu
    • Replies: 5
    • Views: 6,855
    Thu 26th Jan 2012, 16:13 Go to last post
  15. HF Propagation

    Started by K2CLH, Tue 25th Oct 2011 00:40
    100, 5btv, antenna, call sign, call signs, conditions, contacts, contesting, cw, dx, germany, ham, ham radio, hf, london, moonraker, problem, propagation, radio, size, solar, sun, testing, uhf, usa, vhf
    • Replies: 5
    • Views: 7,154
    Wed 26th Oct 2011, 21:06 Go to last post
  16. Astonishing propagation on 20m?

    Started by 2E0FSM, Mon 9th Jun 2014 21:25
    10m, 20m, amateur radio, antenna, calling, cb, cq, cw, first qso, fm, garden, hf, noise, noise floor, phone, portable, power, propagation, psk, psk31, qso, radio, saturday, ssb, sstv, weekend, wire
    • Replies: 5
    • Views: 6,290
    Wed 11th Jun 2014, 09:17 Go to last post
  17. Propagation

    Started by Don Hirth, Fri 22nd Aug 2014 23:11
    2015, 40m, calling, cards, contacts, cq, dx, ham, key, license, mobile, propagation, qso, radio, receiver, shack, software, sun
    • Replies: 5
    • Views: 15,948
    Tue 2nd Sep 2014, 00:38 Go to last post
  18. Beacons

    Started by Sudden, Wed 16th Sep 2015 16:06
    100, 2 m, 70 cm, call signs, conditions, contacts, cw, fm, hf, interference, morse, morse code, net, noise, propagation, psk, radio, radios, receiver, repeater, rtty, short, size, ssb, static noise, vhf, website
    • Replies: 5
    • Views: 4,654
    Sat 3rd Oct 2015, 21:24 Go to last post

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