Πέμπτη 2 Απριλίου 2026

QSL World


 Our tool uses AI and QRZ.com API to help you visualize your ham radio contacts. Simply upload your ADIF file (.adi file), and it will generate a clear map of your QSOs. Whether you’re new to ham radio or a seasoned operator, this tool is here to make mapping your contacts easy and accurate.

More: https://qslworld.com/

Πέμπτη 11 Μαρτίου 2021

HELLAS-FRN (Free Radio Network)


Free Radio Network gives more reach to mobile / portable wireless users. With the FRN Client program you are able to create a gateway that connects a communication channel of a local mobile / portable radio to the network. To do this the program must run in "Gateway" mode.

If you do not have the ability to set up your own gateway and there is no other gateway in your area, then you can use the program in "PC User" mode (PC only) to talk to FRN users on the network .

More info: https://hellas-frn.weebly.com/


Κυριακή 14 Φεβρουαρίου 2021

SX200CXW Special Event Station will be on the air until 31/12/2021



Special Event Station (SES) raw as SX200CXW to celebrate the 200th anniversary of  Hellenic War of Independence against Ottoman Turks.

Hellenic Revolution against Ottoman Turks (link to wikipedia)

It was March 25, 1821, when Bishop Germanos of Patras raised the flag of revolution over the Monastery of Agia Lavra in the Peloponnese.

The cry “Freedom or death” became the motto of the revolution.

The Greeks experienced early successes on the battlefield, including the capture of Athens in June 1822, but infighting ensued. By 1827 Athens and most of the Greek isles had been recaptured by the Turks.

Just as the revolution appeared to be on the verge of failure, Great Britain, France, and Russia intervened in the conflict. The Greek struggle had elicited strong sympathy in Europe, and many leading intellectuals had promoted the Greek cause, including the English poet Lord Byron.

At the naval Battle of Navarino, the combined British, French, and Russian forces destroyed an Ottoman-Egyptian fleet.

The revolution ended in 1829 when the Treaty of Edirne established an independent Greek state.


Σάββατο 2 Ιανουαρίου 2021

YONIQ - MMSSTV


 Under the pseudonym YONIQ , a new version of the popular MMSSTV software for communication through slow-scan television or SSTV is born. The idea is to provide the popular software with certain functionalities , to a greater or lesser extent, demanded by many of its users over time .

YONIQ maintains the charm and most of the features of the original software, but also provides you with other functions that put it in the segment of utilities for 21st century radio amateurs . 

Info: http://radiogalena.es/yoniq/

Τρίτη 15 Δεκεμβρίου 2020

MorseKeyer App

 

MorseKeyer app is a professional-grade telegraph key for radio operators skilled in Morse code, and for those who would like to learn it. The app operates like a real electronic keyer with a dual-lever paddle and is equipped with a text display to show transmitted characters.

Info: https://morsekeyer.com/en/

Σάββατο 5 Δεκεμβρίου 2020

HAMLOG.online - Global log and hamradio awards

 

HAMLOG service has been operating since 2015. The prototype was the autocount system for the RAEM-110 memorial, which made it possible to download the connections of special stations, as well as issue diplomas in electronic form.

More info: https://y7k5t6wdh4kiq7k4gcdygd2zmy--hamlog-online.translate.goog/

Δευτέρα 24 Αυγούστου 2020

SX300ML (Molon Lave) Special Event Station

  SX300ML (Molon Lave) Special Event Station 5/9/2020 - 19/9/2020

SX300ML is a special callsign commemorating the 2500th anniversary of the epic  Battle of Thermopylae (480 BC), when  King Leonidas of Sparta and a small force of Greek warriors, including 300 Spartans, resisted  the much larger invading  Persian army led by Xerxes the Great.

INFO & LOG:https://www.qrz.com/db/SX300ML

Πέμπτη 2 Απριλίου 2020

Amateur Atlas

Amateur Atlas
Christian F5LGF produced an exceptional document of more than 300 pages which details, for each DXCC country, the geographical distribution of prefixes, regions etc ... with many illustrations.
Christian died in December 2019.

Τρίτη 10 Δεκεμβρίου 2019

Installation Antennas to rotator (Tower-Mounted Antennas)


In the preferred tower-mounting configuration, the antenna Wind Loading Area must be less than 1 m2 (G-450A) or 2 m2 (G-650A), and the “K” factor (see below) must not exceed 100 (G-450A) or 180 (G-650A), where K = [Antenna Turning Radius (m)] x [Antenna + Mast Weight (kg)]. Refer to the antenna manufacturer’s specification sheet for determining the turning radius and weight of the antenna
  
Example: In this example, a 14 MHz 3-element Yagi of Turning Radius 7.5 m, Weight of 14 kg, and Surface area of 0.7 m2 is proposed for tower mounting below a 3-element 21/28 MHz trapped Yagi of Turning Radius 3.5 m, Weight of 13 kg, and Surface Area of 0.3 m2 . The mast weight is 5 kg.
 The antenna system K factor, then, is the sum of the two antenna K factors:
 K1 = K factor of 14 MHz 3-element Yagi.
K1 = Turning Radius (7.5 m) X Weight (14 kg + 2.5 kg) = 123.75
         |              |
Antenna Weight      Mast Weight (5 kg ÷ 2)
  K2 = K factor of 21/28 MHz 3-element trapped Yagi.
K2 = Turning Radius (3.5 m) X Weight (13 kg + 2.5 kg) = 54.25
         |              |
Antenna Weight      Mast Weight (5 kg ÷ 2)
 KTotal = K1 + K2 = 123.75 + 54.25 = 178
 The antenna system Wind Loading Area is: 0.7 m2 + 0.3 m2 = 1.0 m2|
 Note: In such “Christmas Tree” installations, compute the mast weight separately for each antenna, using the relative heights of the two antennas to apportion the mast weight.
Refer to the antenna manufacturer’s specification sheet for determining the weight and the surface area of the proposed antenna.

More: https://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=104&encProdID=9CD2145C24AE53C5A6C62D7D703A9F3C&DivisionID=65&isArchived=0

Δευτέρα 2 Δεκεμβρίου 2019

Installation Antennas to rotator (Pole-Mounted Antennas)



Pole-Mounted Antennas
Mounting of the rotator on a pole or mast results in a significant de-rating of the size of the antenna which can be mounted, due to the tremendous bending forces applied to the rotator’s clamps. For pole mounting, the attached antenna must have a net mounted weight (combined weight of antenna plus mast) of 10 kg or less, and the product of multiplying the [Antenna Wind Load Area (in m2 )] by the [Height of the Antenna Mast (in m)] must be 0.25 or less.
[Antenna Weight] + [Mast Weight] ≤ 10 kg.
[Antenna Wind Load Area] X [Height of Antenna Mast] ≤ 0.25
Refer to the antenna manufacturer’s specification sheet for determining the weight and the surface area of the proposed antenna.
Yeasu Rotators:
The antenna Wind Loading Area must be less than ,=<0,25 (G-450A) & (G-650A), or =<0,45 (G-1000DXC), or =<0,80 (G-28000DXC)
Example:
For a 50 MHz 5-element antenna of surface area of 0.3 m2 , the above specifications for pole mounting will be met if (A) the antenna is mounted on a mast not longer than 0.8 m (0.3 X 0.8 = 0.24 < 0.25), and (B) if the mast weight plus the antenna weight is less than 10 kg. However, if the mast is 1 meter long, the specification will be exceeded (0.3 X 1 = 0.3 > 0.25).

More: https://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=104&encProdID=9CD2145C24AE53C5A6C62D7D703A9F3C&DivisionID=65&isArchived=0

Δευτέρα 14 Οκτωβρίου 2019

Coaxial Cable Data

Type
50MHz
loss/max pwr
144MHz
loss/max pwr
432MHz
loss/max pwr
1296MHz
loss/max pwr
diameter
velocity
factor
Aircom+

4.5 / 1000
8.2 / 530
14.5 / 300
10.8
0.85
Aircell 7
4.8 / 1000
7.9 / 800
14.1 / -
26.1 / 190
7.3
0.83
Ecoflex 10
- / -
4.8 / 950
8.9 / -
16.5 / -
10.2
0.86
Ecoflex 15
1.96 / -
3.4 / 1800
6.1 / -
11.4 / -
14.6
0.86
H 100
2.8 / -
4.9 / 1000
8.8 / 530
16.0 / 130
9.8
0.84
H 155
6.5 / -
11.2 / 240
19.8 / 90
34.9 / 49
5.4
0.79
H 500
2.9 / -
- / 1000
- / 530
17.4 / 130
9.8
0.81
H 2000 flex
2.7 / -
4.8 / 1600
8.5 / -
15.7 / -
10.3
0.83
RG 55

18.5 / 300
34.0 / 200
60.0 / 100
5.4
0.66
RG 58 CU
11.0 / -
20.0 / 240
40.0 / 90
90.0 / 49
5.0
0.66
RG 174 U

34.0 / 95
60.0 / -
110.0 / 30
2.8
0.66
RG 213 U
4.3 / -
8.2 / 800
15.0 / 290
26.0 / -
10.3
0.66
RG 223 U

18.5 / 300
34.0 / 200
60.0 / 100
5.4
0.66
Cellflex 1/4"

5.5 / 1200
9.0 / 750
18.0 / 400
8.0
0.85
Cellflex 3/8"

3.8 / 2800
6.5 / 1200
13.0 / 680
15.0
0.85
Cellflex 1/2"

3.0 / 2800
5.6 / 1600
10.0 / 850
16.0
0.88
Cellflex 5/8"

2.5 / 4000
4.0 / 2300
7.2 / 1350
23.0
0.85

loss : dB per 100meters   -   max pwr : Watts   -   diameter : millimeters

Παρασκευή 23 Αυγούστου 2019

BV software for QSL Management and Label/QSL Printing

BV is a professional software for QSL Management and Label/QSL Printing - developed since 1989 by Bernd, DF3CB. It is mainly designed for the contester and QSL manager with high QSL quantities but useful for all other QSL'ing purposes as well.

More: https://www.df3cb.com/bv/

Πέμπτη 22 Αυγούστου 2019

Γιατί οι γονείς έχουν άσπρα μαλλιά


(Για όσους έχουν παιδιά, προς γνώση και συμμόρφωση)
Ένας πατέρας περνώντας από τη κρεβατοκάμαρα του γιου του έμεινε κατάπληκτος όταν είδε το κρεβάτι του ωραία στρωμένο και όλα τακτοποιημένα και καθαρά. Μετά είδε ένα φάκελο τοποθετημένο σε περίβλεπτη θέση στο μαξιλάρι. Όνομα παραλήπτη 'Μπαμπάς'. Με το χειρότερο προαίσθημα, άνοιξε το φάκελο και διάβασε το γράμμα με τρεμάμενα χέρια:
Αγαπημένε μου πατέρα,
Με μεγάλη μου λύπη και θλίψη σου γράφω, γιατί κλέφτηκα με την καινούργια μου φιλενάδα και ήθελα έτσι να αποφύγω τη σύγκρουση με εσένα και τη μαμά. Έχω βρει το πραγματικό πάθος με την Παναγιώτα και είναι τόσο συμπαθητική. Ήξερα ότι δεν θα την εγκρίνατε εξαιτίας των σκουλαρικιών στη μύτη και στη γλώσσα, των τατουάζ, των κολλητών δερμάτινων ρούχων μοτοσικλέτας αλλά και επειδή είναι αρκετά μεγαλύτερη μου.
Αλλά δεν είναι μόνο το πάθος, μπαμπά. Είναι έγκυος. Η Παναγιώτα λέει ότι θα είμαστε πολύ ευτυχισμένοι μαζί. Έχει δικό της τροχόσπιτο και μένει στο δάσος. Έχει μαζέψει αρκετά καυσόξυλα για όλο το χειμώνα. Ονειρευόμαστε να αποκτήσουμε πολλά παιδιά. Η Παναγιώτα μου άνοιξε τα μάτια, με έκανε να καταλάβω πως η μαριχουάνα δεν βλάπτει στην πραγματικότητα κανένα. Θα την καλλιεργούμε και θα την ανταλλάσσουμε με άλλα άτομα στη κοινότητα για όση κοκαΐνη και Ecstasy θέλουμε. Εντωμεταξύ θα προσευχόμαστε ώστε η επιστήμη να βρει τη θεραπεία για το AIDS  και έτσι η Παναγιώτα να είναι καλύτερα, εξάλλου το αξίζει!
Μην ανησυχείς για εμένα μπαμπά, είμαι 15 χρονών και ξέρω να φροντίζω τον εαυτό μου. Κάποια μέρα, είμαι σίγουρος πως θα έρθουμε πίσω να σας επισκεφτούμε για να γνωρίσεις τα εγγόνια σου.

Ο Γιος σου, Θανάσης

Υ.Γ. Μπαμπά, τίποτα από τα προηγούμενα δεν είναι αλήθεια. Είμαι πέρα στο σπίτι του Αντρέα. Απλά ήθελα να σου θυμίσω πως υπάρχουν χειρότερα πράγματα στη ζωή από τον έλεγχο στο συρτάρι του γραφείου μου.
Σ' αγαπώ πολύ! Πάρε με όταν θα είναι ασφαλές για μένα να γυρίσω σπίτι.


Τετάρτη 6 Φεβρουαρίου 2019

ES5TV 15m 8x5 Elements H Frame Stack

70 meters high tower carries 8 5-element 15m yagis as pairs separated horizontally by 12 meter distance and vertical stacking is 14 meters. The heights of the antenna pairs are 64, 50, 36 and 22 meters.