long distance propagation of hf radio waves paperback

Long Distance Propagation of Hf Radio Waves (Paperback)

The study of very long-distance and around-the-world propagation of HF radio waves becomes more urgent in connection with the problems of long­ distance ground-based radio communications,communications with space­ crafts and satellites,satellite-to-satellite communications,around-the-world radar scanning,around-the-world sounding of the ionosphere,etc. At pre­ sent,these investigations have acquired particular interest because transmit­ ters which make it possible to intentionally modify the ionospher

Pair of tfg v10 long distance casting reels

Mint condition pair of tfg v ball bearing size reels. Super smooth reels with power handle and high retrive.front drag, instant anti reverse.takes 505 yards of 10 llb line. £60 for the pair. Ad ID: Delivery Service Consumer Credit

Long Distance: Testing the Limits of Body and Spirit in a

ISBN: , SKU: , AUTHOR: McKibben, Bill, PUBLISHER: Rodale Press, A new edition of a classic McKibben book about what it takes to be a world-class athlete and where the true meaning of endurance can be found At 37, the celebrated writer and environmentalist Bill McKibben took a break from the life of the mind to put himself to the ultimate test: devoting a year to train as a competitive cross-country skier. Consulting with personal trainers, coaches, and doctors at the US Olympic Center, he followed the rigorous training regimen of a world-class athlete. Along the way, he learned to cope with his physical limitations and, when his father was diagnosed with a life-threatening brain tumor, discovered something about the real meaning of endurance. Told with his trademark intelligence, humor, and honesty, Long Distance is an insightful examination of the culture and mind-set of endurance athletes, and a moving and inspiring meditation on finding balance in our often harried lives.

HF Antenna MQ36SR Antenna amateur radio HF antenna

MQ-36SR TGM Six Band Three Element Hybrid Quad director Antenna with rotator, controller, and coax ect. Been using this for a few years and loved it. Good front/back rejection even 10ft off the ground. Beam was pound new but been replaced now by the newer version. comes with pole, rotator, coax ect. Buyer will need to disassemble it to see how to put it back as it's tuned and very complicated beast. Many thanks Electrical Specifications Operating Bands: Metres  Forward Gain (+/-0.5dB)- 10M-7.0 dBd.,12M-7.0dBd., 15M-7.0 dBd., 17M-6.4dBd.,20M-6.0 dBd.  SWR @ Resonance (See Curves)  Power Rating: Watts P.E.P  Front to Back Ratio: 15 to 20 dBd  Front to Side Ratio: -25db.  Input Impedance: Single 50 Ohm Feedline  Rotor: Medium to Heavy Duty TV  Mechanical Specifcations Element Length: 11 Ft 9 inches  Boom Length: 10 Ft 3 inches  Turning Radius: 8 Ft 3 inches  Overall Quad Reflector Height: 48 inches  Weight: 26 lbs  Mast (not inc'l): up to 2 1/8 inch  Wind Loading: 3.1 Sq. Ft.  Wind Survival: 75 MPH  Read More

HF Antenna MQ36SR Antenna amateur radio hf antenna

MQ-36SR TGM Six Band Three Element Hybrid Quad director Antenna with rotator and coax ect. Been using this for a few years and loved it. Good front/back rejection even 10ft off the ground. Beam was pound new but been replaced now by the newer version. comes with pole, rotator, coax ect. Electrical Specifications Operating Bands: Metres  Forward Gain (+/-0.5dB)- 10M-7.0 dBd.,12M-7.0dBd., 15M-7.0 dBd., 17M-6.4dBd.,20M-6.0 dBd.  SWR @ Resonance (See Curves)  Power Rating: Watts P.E.P  Front to Back Ratio: 15 to 20 dBd  Front to Side Ratio: -25db.  Input Impedance: Single 50 Ohm Feedline  Rotor: Medium to Heavy Duty TV  Mechanical Specifcations Element Length: 11 Ft 9 inches  Boom Length: 10 Ft 3 inches  Turning Radius: 8 Ft 3 inches  Overall Quad Reflector Height: 48 inches  Weight: 26 lbs  Mast (not inc'l): up to 2 1/8 inch  Wind Loading: 3.1 Sq. Ft.  Wind Survival: 75 MPH  Read More

Jrc hf radio - Nrd-535 in Cardiff

Below is a full description - all the ins and outs! I have reduced the price as the casing is no longer black black as sun has slightly faded it - it dont affect the item from working its all in full working order and belonged to my late Mother who had a passion for this. I had it fully PAC Electrical Tested approx 4 weeks ago and have the pass certificate showing no issues NRD-535 affords general coverage reception from 90 to kHz in AM, USB, LSB, CW, RTTY, FAX and narrow FM modes. A triple conversion superheterodyne circuit is employed to provide superb sensitivity and image rejection. Japan Radio has designed a special high-speed 1 Hz step PLL synthesizer to provide you with 1 Hz tuning resolution never before available. Display resolution is 10 Hz via a gorgeous display. A sophisticated 200 channel non-volatile scanning memory stores frequency, mode, AGC, ATT and IF filter selection. Channels can be scanned at a user-defined rate (.5 to 5 seconds/channel). Sweep reception can be adjusted from.05 to.5 seconds/step. Japan Radio's reputation for extreme stability continues with only 2 PPM drift (after 1 hour) making the NRD-535 the inevitable choice for the demanding non-voice modes such as Morse code, RTTY and FAX. filled. (An empty AUX position results in a +12 kHz bandwidth). The AUXiliary positions can be used to mount optional filters. Any filter may be used with any mode (except FM). This is an exceptional feature that provides listener flexibility. The keypad features both MHz and kHz input. The dual-width noise blanker can be used to reduce or eliminate pulse noise (like auto ignition or the "woodpecker"). Other front panel controls include: SQUELCH, AF and RF GAIN and TONE. An AGC button permits the selection of AGC FAST, SLOW or OFF. The DIMMER button offers four brightness display levels. A built-in 24 hour clock timer is provided. The TIMER permits unattended listening/recording. The receiver can be programmed to be turned on at a particular time (on a set frequency, mode, bandwidth, etc.) and then turn off at a programmed time. A timer-out terminal connection is provided on the back panel of the set to activate a tape recorder. The NRD-535 contains a built-in RS-232 computer interface. There are antenna inputs for wire or coax fed. The AC input voltage is user selectable. cent channel interference. Because of the overcrowd

Hi-Gain Patriot HF Ham radio antenna

Hi Gain Patriot Hf antenna ft 10ins high. This antenna is a serious antenna, 3 db gain world wide coverage. Free standing but I had it guyed for extra stability. No earth needed or tuner, pole or ground mounted. Price fixed no discount for travel, buyer collects. Ad ID: Delivery Services Consumer Credit

Yaesu ft100d hf uhf vhf radio in Mansfield

Hi selling my ft100d or will trade for a ft857d or icom ic706 mk2 g the radio is in full working order i dont have the bracket to mount it in the car i have original box but a bit tatty. Prefare cash on collection but will post at buyers expence I will make up any extra with cash. Can be seen working Tnx Paul

Long distance pigeons

Brikoks and silver shadow cocks and hens stock pigeons only selling as i an starting to spring race the birds have breed sum superd young in the past flying over the water good old family that will do the job for eny loft £25 each or £45 a pair will do cheaper is u take more then 1 pair Read More

Long distance binoculars

Long distance binoculars comes in a leather protection case with eye caps great for bird watchers ect Ad ID: Delivery Service Consumer Credit

Long distance pigeons

Brikoks and silver shadow cocks and hens stock pigeons only selling as i an starting to spring race the birds have breed sum superd young in the past flying over the water good old family that will do the job for eny loft £15each or £25 a pair will do cheaper is u take more then 1 pair there are 8 pair if u take the lot £180 if one by next Saturday the 25th Read More

hack / long distance

Paula is a skewbald 15.3hh 13 year old polish Anglo Arab x mare she is a complete dope on a rope to handle and lives out with mares and gelding, very easy going not marish will walk trot canter in the school but doesn't like it prefers to hack and nothing fazes her snaffle mouth at all times doesn't get fizzy or silly even on grass or in open spaces. Doesn't need to be ridden every day lives in or out goes barefoot so cheap to keep originally imported from Ireland passported polish warmblood tack and delivery available Read More

Long distance racers

FOR SALE BEST OF; Very old bloodlines of Corbett bushchaerts originally bought from Jonny Palmer years ago, jan thelaan, kip birds. Long distance birds Won combines..thurso, raced many times over the channels, le mans, bordeaux ect... There is about 8-10 cocks and hens £90 EACH LONDON Read more

Clansman PRC-320 HF Manpack Radio (TAMROC) in Plymouth

3/30W HF Clansman PRC-320 Transceiver (In built ATU) This is the complete setup and includes everything required to get on the air straight away, I welcome collection locally (collection is cash only) or will send via Parcel Force 48. Covers 0-30Mhz, 3/30w USB or CW What's Included. Clean working condition, Clansman PRC-320 PRC-320 Bergen Back Pack Carrying Frame 3m Whip Antenna 5m Whip Antenna Loudspeaker box Microphone / Handset / Speaker Mains Charger 2x NI-CD Batteries (Rechargeable) Goose neck adaptor Headset with PTT

YAESU FT 891 HF / 50 MHZ Transceiver ham radio

YAESU FT 891 HF / 50 MHZ Transceiver 6 months old and has been widebanded,boxed and in as new mint condition comes with all accessories and all working as it should. Pick up only if interested please pm me. Thanks for the ad. Read more

YAESU FT FT2K AMATEUR RADIO HF TRANSCEIVER in Nuneaton

Yaesu ft hf transceiver never Neen opened or messed with a very honest radio in good condition with box.

Used Kenwood TS-530S Ham Radio MHz HF Transceiver

Used Kenwood TS-530S Ham Radio MHz HF Transceiver This has been tested in our Ham radio club by very qualified Amateur Radio person is a teacher. The only reason for selling is that I brought this ham radio to take up the ham radio hobby at moment I have decided not to carry on due to my health and time. Thank you. Michael Read more

GPO long distance Telephone

Very good condition buyer collects Ad ID: Delivery Service Consumer Credit

WANTED HF RADIO COMMUNICATIONS RECEIVER AOR / RACAL/R&S/JRC

ADVERT ALWAYS VALID! Hi I'am looking to buy a HF Radio Receiver Communication like AOR RACAL Rohde & Schwarz JRC PLESSEY YEASU ICOM DRAKE or SDR RECEIVER PLASE DO NOT CONTACT ME WITH CB'S STUFF AS I CURRENTLY LOOKING ONLY FOR HF RADIO RECEIVERS! ALL UK Cash Waiting £££££££ Read More

HF Linear Amplifier amateur radio rm bla 300 in Nuneaton

was working the relay went intermittent then it stopped working. used with a ft817 not very old. open to offers. thanks

WANTED HF HAM RADIO COMMUNICATIONS RECEIVER JRC RACAL OR SDR

ADVERT ALWAYS VALID! Hi I'am looking to buy a HF Radio Receiver Communication like AOR RACAL Rohde & Schwarz JRC PLESSEY YEASU ICOM DRAKE or SDR RECEIVER SDRPLAY 2 ELAD FDM 2 WELLBROOK LOOP ANTENNA ANTENNA ROTATOR Cash Waiting £££££££ I can travel! Read More

Browning Spitfire Long Distance LED

Torc. 6" overall. Rugged green aluminum construction with gray trim. Unbreakable lens. O-ring sealed. Long distance Cree LED with up to 80 lumen output shines up to 130 yards. Uses two AA batteries (included). Up to one hour 45 minute burn time per battery set. Hang packaged.

Moody Blues - Long Distance Voyager

The Moody Blues: Justin Hayward (vocals,guitar); Ray Thomas (vocals,flute,harmonica); John Lodge (bass,background vocals); Patrick Moraz (keyboards); Graeme Edge (drums). Additional personnel: The New World Philharmonic. The Moody Blues: Justin Hayward (vocals,guitar); Ray Thomas (vocals,flute,harmonica); Patrick Moraz (keyboards); John Lodge (bass,background vocals); Graeme Edge (drums). Additional personnel: The New World Philharmonic. Personnel: Justin Hayward,John Lodge (vocals,guitar); Ray T

LONG DISTANCE REMOVALS in Brighton

Long distance removals from Brighton and surrounding areas to anywhere in the uk, extra high roof and extra long wheel base van for huge loading space 15 years experience, friendly and reliable service, call now for a discounted quote for long distance moves Local moves also available if minimum of 5 hours working time Call for a quote

Yaesu ft817 hf 0- 50mhz + 2m +70cm cb ssb amateur radio

Yaesu ft817 complete boxed with battery for using portable. Covers 1 to 50mhz, 2m and 70cm. Has issue with tuning knob works fine on usb, lsb but doesnt seem to tune on fm, can be used on fm perfectly if you select frequency on usb then flick to fm. Apart from that radio fine could probably do with new vfo knob. £150.. Qth preston. Ad ID: Delivery Service Consumer Credit

Contact

• Next →