Just back from holidays, from tuscany coast. I’ve been active mostly in BPSK-31 on 20 meters and RTTY. I’ve been able to operate just during the baby’s sleeping hours…
I’ve also enjoyed making a small bazooka antenna for 30 Mhz with a pieco of RG59 I saved years ago from an old 10 Mbit network lan. I’ve used a plan recovered on the net months ago, and I’ve been surprised of excellent swr … 1:1.2 on all band.
Main antenna however was the old triband dipole, while the buddiple was too high on swr due to the presence of threes in the camping.
Most of the contacts has been done in QRP, with 5 W only, and I was suprised of how efficient are bpsk modes. So finally I logged 150 digital qsos, and a few ones on ssb too.
I’m getting ready for the holidays, where I will probably will be active on digital modes. I will take my FT-857 and Buddipole antenna with me and I will try to operate from mobile station. I will be in Tuscany coast for 3 weeks this year, so hopefully I will be able to enjoy my radio and my family at the same time…. (you know … not exactly at same time).
Well in the mean time I’ve found a cool map of italy, there are not so many on the net, so here you are my latest contribution.
[tags]ham radio, italy map, italian map, ham radio map,hamradio[/tags]
Need a general purpose antenna on “6 – the magic band” ?
The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
If you need more info or dimensions for other frequencies, check out the web on J-Pole antennas.
This construction will take your 1-2 hours and it will cost you about $25.
cost breakdown below is for the material actually used, longer tubing lengths may be required that inflate the apparent cost.
1 x 6.1 metre length 19mmx1.5mm round aluminium tubing ($12.75)
1 x 1000mm length 16mmx1.2mm round aluminium tubing ($1.50)
1 x 200mm length 38x25mm rectangular aluminium tube (x 1.0mm wall) ($1.80)
4 x 12-23mm stainless steel worm-style hose clamps ($1.50 each)
2 x 16mm (tubing size) plastic chair tips ($0.70 each)
16 x aluminium pop rivets
50 ohm coax cable, eg RG58A/U, minimum length 3-4 metres
200mm x 32mm white outdoor conduit
Nylon cable ties etc…
According to the Indian Institute of Science, and in particular to Prof. Choudhuri, the next active phase of our sun will be rather mild.
They have based the forecast using a new theoretical calculation, pointing out that some assumptions in the previous forecast model are unjustified.
Their final forecast, is that upcoming solar cycle will be 35% lower than the current one.
Certainly next years solar reports will say if Indians researchers have discovered a more reliable forecast method.
[tags] ham radio,propagation,sunspots,amateur radio,dx,noaa,sun,solar[/tags]
Solar cycle 24, due to peak in 2010 or 2011 “looks like its going to be one of the most intense cycles since record-keeping began almost 400 years ago,” says solar physicist David Hathaway of the Marshall Space Flight Center. He and colleague Robert Wilson presented this conclusion last week at the American Geophysical Union meeting in San Francisco
Their forecast is based on historical records of geomagnetic storms.
According to their analysis, the next Solar Maximum should peak around 2010 with a sunspot number of 160 plus or minus 25. This would make it one of the strongest solar cycles of the past fifty years—which is to say, one of the strongest in recorded history.
[tags]propagation,hamradio, amateur radio, solar,sunspots[/tags]
During the last days QSL.net domain has been down. Ham radio community have been missing a large part of it’s web presence, and a valuable part of knowledge.
QSL.NET was started in the winter of 1996 by K3TKJ, and host thousands of ham radio related web sites, email redirection services and mailing lists, for free.
At the time while writing QSL.net is recovering, but I’ve not been able to find any public announce. Rumors, says a maintenance activity is ongoing, someone else reports a server outage.
This downtime should let us think about importance of QSL.net service. I would suggest all those who are using K3TKJ services to donate, or move their web sites somewhere else.
Our knowledge is too important to to be compromised by a single point of failure
I’m lookingÂ to setup a hidden / indoor antenna, andÂ i’ve found a couple of interesting articles on hidden / stealth antennasÂ
This small antenna can allow hams which lack space to install an antenna for 40 meters. This project has been originallyÂ produced by F6CYV. I’m going to test this antenna in the coming weeks. I will try to setup this inside my balcony.
According to his experience, using it form inside the apartament, european singals are all very readable, he has worked over 150 countries.
The antenna is made of 2mm wire.
The 2 coils are constituted by 18 turns of 2 mm wire, distance of tunrs is also 2 mm.
The diametre of the coils is of 7,8 centimeters.
The Feed of the dipole is done with a 75 ohms tv coaxial cable.
A 1/1 balun would be recommand for a correct feed of the coaxial cable to the dipole.
It is not necessaryÂ to use a coupler, it is enough to set the length of both extremities of
the dipole in order to have at 7.050 mhz a low SWR, and especially to pay attention what the lenght of the 2 sides of the dipole to be identical.
[tags]antenna,ham-radio,amateur radio,HF antenna[/tags]
Last weeked we joined the ARI italian contest 40 & 80 meters. Even if I’ve never enjoyed so much the italian only competitions, I must admit that I’ve been enthusiast.I operated the IQ5FI, club station, during the day-light hours, so, mostly on fourty meters, and has been a surprise for me, since the frequency was very very busy. SSB contacts were very difficult due to the high QRM and due to the quick change of propagation with fast openings to north and then to south (we are located in the center).
So happened a couple of times, that while I was calling CQ and making contacts into an apparently free frequency, ather a repentine propagation change, stations were reclaming the same frequency because according to them, they were using that short piece of fourty since several minutes…. (and we too) HI !
During high QRM conditions, RTTY and CW contacts payed a lot.
We made 546 QSO’s in the 24 hours, scoring 118000 points, much better than the previous year were we made just 80000.
As for the CQWW SSB, I’ve taken a couple of minutes of recordings, that I’ve edited and published today on Youtube. Most of dialogs are in italian of course, but I’m sure you will be able to understand most of the QSOs…
Watch and comment video on YouTube
[tags]ham radio,contest,ari,amateur radio,contesting,video[/tags]
Finally new QSL cards has arrived. Myself and other local hams have been very impressed with the high quality of these cards. I promised in a previous post to give a final opinion on IT9EJW products quality. It’s a 5/5 stars. List of world wide QSL Printers
Price for 1500 QSL cards has been 100 Euros P&P included. Delivery time since order has been aprox 1 month.
Last friday I’ve been able to send out my QSL cards for QSO I’ve done in these months. In order to speed up the process I’ve used the BV7 label program by DF3CB, I’ve choosed that program among a list of QSL Software.
Is really well done label printing program develobed by hams for hams, it allow import of ADIF log files, and allow to use standard label sheet papers sizes, or to create custom one. I choosed the second way. The program includes a graphical drawing interface where you can draw the content of your label, choose custom graphic, or add or remove fields.
It works correctly with multiples QSOs, and can manage several QSL Manager databases, where you can lookup for missing managaers in case you forgot it in your logging program. I’m currently using Ham Radio Deluxe, and this cool freeware currently lack of a label printing feature. Now I’m looking to see what will be the QSL sent/returned ratio.
[tags] ham radio,qsl,amateur radio,dx,qsl cards,dx[/tags]
Yet another fun experience in contesting. I’ve taken part to the multi operator station IQ5FI last weekend for the CQ WW SSB international contest.
I’ve been active since 00:00 till 03.30 Gmt of Saturday 28th along to I5UKS Paolo, and then again another night spent with IZ5GUL from 20.00 to 04.00 GMT of Sunday 29th.
I have operated during the nights, mostly on 40 and 80 meters even if propagation has not been so good, we have worked aprox. 140 QSOs.
Other hams taking part to this station were I5UKS, I5RFD, I5CRL, IW5EIJ , IZ5HMK,IZ5GUL, IZ5HQB ,IZ5BRW ,IK5GQK, our claimed score is 299.153, we know is not much, but restricted antenna conditions did not help us a lot, location of our club station is in the historic center of Florence, (aprox one mile from the dome), so we did not expect to be big-guns competitors at all; we had fun in any case, and we did a bit of activity for our club call-sign IQ5FI.
Along to the picture you can see above, (joked a bit with photoshop) I’ve also taken a couple of minutes of random movies.
You can have look at it on YouTube (joked a bit with Premiere)
Let’s have fun with ham radio.