"N" conn. assembly instruction ULTRAFLEX 13

New Russian Arctic Over-the-Horizon Radars

New Russian Arctic Over-the-Horizon Radars Set for 2017 Startup

According to media accounts, more long-range, new over-the-horizon (OTH) radars that can identify aerial and sea targets hundreds of miles away are scheduled to begin operation next year in the Russian Arctic. It’s doubtful, however, that the news heralds the return of interference on the level of that generated by the so-called “Russian Woodpecker” OTH radar, which plagued Amateur Radio HF bands in the 1970s and 1980s.

SPE Combiner CO1-HF

Up to 5 KW Combiner for two SPE EXPERT 2K-FA or two SPE EXPERT 1.3K-FA Linear Amplifiers

• Up to 5 KW.
• This combiner doubles the power of two SPE EXPERT 2K-FA or two SPE EXPERT 1.3K-FA amplifiers, maintaining all the features of each of the amplifiers.
• The connections are the same as for a single linear amplifier.
• All the wiring/cables between the CO1-HF combiner and the linear amplifiers are supplied as a standard feature.
• The power consumption is very low due to power factor correction (PFC).
• This combiner allows you to increase your amplifier system step-by-step.
• To provide you with flexibility, you can use each linear amplifier separately (e.g. take the SPE EXPERT 1.3K-FA on a DX’pedition.
• CE certified.

 More : http://rfsolutions.com.au/ham-radio-products/amplifiers/spe-combiner-co1-hf/#tab_4

RF pollution from solar panels

Solar installations often give problems when it comes to polluting the airwaves with radio interference. 

Electrical systems such as solar panel installations must comply with EMC (Electro Magnetic Compatibility) standards. That means for example that there is a limit (limit) is what an electrical system, such as the combination solar panel and inverter including cabling, may emit electromagnetic fields (EMF). However, this emission limit is more often than not exceeded. That turned out already in 2014 a study of the EMC Adminstrative Cooperation Working Group in which 14 European countries took part.

Frequency Nomenclature: Kilohertz to Terahertz

Frequency Nomenclature: Kilohertz to Terahertz (.PDF Download)
By: Jean-Jacques DeLisle
Info:  http://mwrf.com/datasheet/frequency-nomenclature-pdf-download

 

SDR Touch

SDR Touch supports receiving FM radio, AM, SSB and CW broadcasts including HAM radio amateurs, police, air traffic, weather reports, fire department and emergency stations, taxi traffic, audio of analogue TV broadcasts, digital broadcasts and many more! Depending on the hardware used, its radio frequency coverage could span between 50 MHz and 2.2 GHz. Turn your mobile phone or tablet into an affordable and portable software defined radio scanner. SDR Touch currently demodulates WFM, AM, NFM, USB, LSB, DSB, CWU and CLW signals

Sporadic 6m May 15, 2016 from EW6BN

SV8JNL, SM2EKM, SV2CXW, LZ0SJB (beacon 2W GP)

Climbing a 363m Radio Tower in Donebach Germany

We actually managed to climb a 363 meter high transmitter tower.
These towers are the highest in Germany, right behind the television tower in Berlin. The antenna was switched of on the first of January 2015 and through that, with no risk of radiation damage accessible.
Therefore, as far as I know, we are the first ones to achieve this goal.
An absolutely stunning sight!!!

"Οδηγού Τηλεπικοινωνιών Εκτάκτων Αναγκών" της IARU

Κατ'αρχήν να σε ευχαριστήσω για μια ακόμα φορά για την συμμετοχή σου στην παρουσίαση του Οδηγού Τηλ/νιών Εκτάκτων Αναγκών, η οποία πραγματοποιήθηκε στις 19 Μαρτίου, με την οποία και απέδειξες έμπρακτα το ενδιαφέρον σου για το είδος αυτό των επικοινωνιών.

Για τον λόγο αυτό, σου στέλνω με λινκ σε μορφή pdf τον εν λόγω Οδηγό, τον οποίο μπορείς επίσης να βρεις στην ιστοσελίδα της Ε.Ε.Ρ., μεταβαίνοντας στον σύνδεσμο "Ομάδες Εκτακτης Ανάγκης" και επιλέγοντάς τον από τα "χρήσιμα αρχεία".

Με την ελπίδα ότι θα τον βρεις ενδιαφέροντα και χρήσιμο, σου εύχομαι "καλή ανάγνωση".

https://drive.google.com/file/d/0B5PXPlstcxE8ZHFKU1gwZFo5S1k/view?usp=sharing 

 

                              Constantin Transvalidis SV2HPH

Voice of America Radio Towers,Controlled Demolition

Introduction to the Icom IC-7300

Chris Ridley (G8GKC), Bob Rogers (M0KKW) and Ian Lockyer (2E0IAJ) from Icom UK give an overview of the IC-7300 HF/50/70MHz transceiver, Icom's first Software Defined Radio (SDR) HF radio.

Ultra portable antenna tower for hams

Super J-Pole Antenna for the 4m

Super J-Pole Antenna for the 70Mhz (4m) Amateur band.
The Vortex ‘Super J-Pole’ Antenna consists of a five eighth wave vertical radiator, a half wave tuning section and a half wave top section. At the base, a quarter wave matching stub forms the classic ‘J Shape’. The addition of the extra half wave top section boosts the gain over a standard J-Pole. The Super J-Pole has an added advantage that tuning can be varied over a fairly wide frequency range by moving the feed-point location up or down. This also gives the user finer control over the impedance and match. The antenna is end fed and has an omni-directional radiation pattern and requires no ground plane or radials. The antenna has a nice low angle of radiation, typically 8 degrees when mounted at 4m in height. This angle reduces further the higher the antenna is mounted. A typical installation with the antenna at 8 meters above ground sees the angle reduce to 5 degrees and the gain increases to 7.29dbi when ground reflections are added.

INFO: http://ei4dib.blogspot.ie/2015/09/vortex-super-j-pole-antenna-vhf-70mhz.html

Multi-Band Dipole 40, 20, 17, & 10 meters