Radio - HF to Microwaves

Generation of WSPR using XOR Gates From radioman in Radio Comms. In Action (21 days old)

I am contemplating calling this the XORgan. I realise that this blog is the one that links from my web site. My other blog with more information on the WSPR Organ can be linked to from here. On … more

Dah Dah-Dah Dah Dah-Dit Dah Dit-Dit Dit Dit-Dit From radioman in Radio Comms. In Action (194 days old)

I showed a few Morse Keys on my old web site, I am not an avid collector, nor am I a Morse mode addict. However I am so glad that to obtain my Licence I had to learn the code, I would not want to be w… more

WSPR Power Levels Newbie problems From radioman in Radio Comms. In Action (241 days old)

It is great to see new licensees building QRP rigs and showing an interest in more than gathering on the Local Repeater swearing and behaving like louts. I have felt for some years now that I can no l… more

It's like trying to Tune a Piano with a Feather From radioman in Radio Comms. In Action (253 days old)

"Like trying to tune a Piano with a Feather" that was my description of getting a home brew MEPT tuned in the 100Hz segment of the QRP-QRSS sections of the bands. When Bill of Soldersmoke fame buil… more

Samsung NC10 Power Supply From radioman in Radio Comms. In Action (274 days old)

First of all I must recommend a site for all Sammy Lovers, I discovered it a bit late, I had made my decisions on what was the best Netbook around and solved the problems, well nearly all of them, no … more

Wind and Solar Power and the NC10 From radioman in Radio Comms. In Action (277 days old)

Since the purchase of my Sammy (Samsung NC10) Netbook Computer the Green Power concept for my portable operation will be more fulfilled. In the past the computer use has been limited due to the curren… more

The Sammy and Linux From radioman in Radio Comms. In Action (278 days old)

I have spent a little more time looking at Linux on the Sammy. Ubuntu 8.10 boots up fine, I did a quick test initially, just to prove to myself that it would work. After a little research it seems th… more

The Sammy on 12 Volts DC From radioman in Radio Comms. In Action (280 days old)

Following the comments from 'balmaha' on my previous post, (he won't last long now, another Sammy sold) I have today gone the full mile and purchased the Maplin Car Laptop Power Unit I mentioned. A v… more

The Samsung NC10 Netbook put to the test From radioman in Radio Comms. In Action (304 days old)

The specs seemed to indicate that it would do it. I 'spose I was a little rash to take the plunge and buy a Sammy to try. Well it does. What? Perform just like any other 1.6GHz Windows XP Machine with… more

A Netbook that cuts the Mustard From radioman in Radio Comms. In Action (310 days old)

I had to do it, my existing Laptop which I use for Portable is a Dell Latitude. Purchased second hand it has done remarkably well, it runs Windows 95, the Display is 16 Colours so photos and SSTV look… more

Netbooks and Ham Radio From radioman in Radio Comms. In Action (315 days old)

I have commented on my companion blog about the EeePC. Personally I think that by using a cut down obscure Linux O/S Asus did Linux no favours. Only recently did I read a review which said 'If you are… more

Cuddle Up! From ktblue in Techno Logic (386 days old)

So when I first got a laptop second hand, i found it awkward and difficult. The mouse pad thing seemed impossible, and the keypad seemed finicky. But, oh be still my beating heart, I've fallen in l… more

Pseudonymity (OtherNo gets DOWN) From ktblue in Techno Logic (392 days old)

www.otherno.com This is like when I discovered video chat existed on Skype, and it worked really well (Are you there, Phillip K Dick?, it's me, KT). So you know how secret agents in movies have … more

Let's navigate this sea of circuits and wires together! From ktblue in Techno Logic (392 days old)

I started off as the desperately technologically dim variety, until... well, it's been less than 5 years since I learned how to type, we'll leave it at that. But the tried and true method of "fake it … more

Reinauguration of cultural centers in Rio de Janeiro From internships in Internships (473 days old)

Reinauguração de espaços culturais cariocas O Tablado, um dos espaços de maior referência no circuito teatral da cidade, passou por reforma para melhorar estrutura e … more

Holidays Internships From internships in Internships (493 days old)

What do you think about this Holidays? Is Brazil your favourite place to enjoy this free time (holidays)? Nice, the IDM- Institut is opening the opportunities for you during this holidays, to m… more

Festival in London celebrates 50 years of Bossa Nova From internships in Internships (497 days old)

Festival in London celebrates 50 years of Bossa Nova This past Sunday the 6th, London celebrated the 50th birthday of Bossa Nova together with the 27000 spectators, who enjoyed a beautiful day of Br… more

Modern Ham Radio - Funny From radioman in Radio Comms. In Action (511 days old)

WSPR is a mode which was purposely designed for QRP Propagation Study. The whole point is to radiate a known level constantly repeated signal and analyse the resultant Spots of that signal by disparat… more

Come to Brazil and make a beautiful tourism From internships in Internships (534 days old)

IDM INSTITUT Internships to Brazil Rio de Janeiro, Brazil The IDM Institut compromises to its social responsibility and for that we will try to bring benefits and partnership to the soci… more

Cinderella Dual Band MEPT From radioman in Radio Comms. In Action (600 days old)

Why Cinderella? In the week prior to the Easter weekend, having completed my Top Band MEPT I was looking at using a similar design for a 40m unit with my 7.00MHz Crystal. Then I received an Invitatio… more

Variable Power Top Band MEPT From radioman in Radio Comms. In Action (618 days old)

Manned Experimental Propagation Transmitter for Manned Experimental Propagation Tests. A new MEPT band, for me 160 meters. I could build the same tried and tested design for all bands but the fun i… more

The G3ZJO Lock From radioman in Radio Comms. In Action (623 days old)

To start to understand the mechanism involved in the locking of two CMOS oscillators on the same chip we need to know a little about what goes on inside the DIL Packaged device. Thanks to Peter G8E… more

Diversity MEPT Propagation Beacon From radioman in Radio Comms. In Action (625 days old)

This is the description and circuit of my Diversity MEPT. I have used a 74HC86 as Oscillator/Buffer and 2 x 74HC240 as PA. Right Click and select View Image for full view. Due to the need for … more

Where can I get a T50-2 and some PCB Material From radioman in Radio Comms. In Action (629 days old)

Where can I get a T50-2 and some PCB Material, Coils, Xtals, IC's and Resistors, Capacitors etc. all suited to Amateur Radio use. JAB that is where, I have been using Peter lately for my component … more

Visitors Where do they come from From radioman in Radio Comms. In Action (634 days old)

… more

An Unexplained Mystery From radioman in Radio Comms. In Action (644 days old)

A change from the usual tone of this blog. Back in the 1970's in our little village in Northamptonshire things were quite different from today. A-10 Tank Buster Planes would appear over the houses … more

'G' MEPT Descripiton From radioman in Radio Comms. In Action (674 days old)

I have built and run two Manned Experimental Propagation Transmitters on 10.140073Mhz to enable myself and others to observe the propagation conditions on that band. I decided from the outset that … more

Sound Card for SDR the Hump in the Middle From radioman in Radio Comms. In Action (692 days old)

There is a screen grab elsewhere showing the 'Hole in the Middle' of my Softrock TX/RX display. I used YouTube as a resource for storing my videos to use here, now they are a collection in themselves,… more

Packet Radio the TNC From radioman in Radio Comms. In Action (692 days old)

OK then whilst I still have my guns loaded lets have a blast at Packet Radio then we can go a bit more positive with the posts. I still run Packet Radio despite the fact that it has almost become t… more

SDR Fkex Radio Software From radioman in Radio Comms. In Action (696 days old)

I have never liked the Flex Radio Software, I looked at it long before I had an SDR receiver to put into it. I thought that perhaps given proper I and Q inputs it would perform more to my liking. Not … more