Friday, July 17, 2015
Wednesday, July 15, 2015
Monday, July 13, 2015
Sunday, July 12, 2015
Taken From G7FQW @ Transmission1 Forum:
Hi everyone,
As some of you already know (I previously mentioned and you requested further info) RADARS (Rochdale Amatuer Radio Society) will be holding its very first annual Radio Direction Finding Foxhunt on August 1st 2015.
The event will be open to members and non-members alike. All will be welcome.
We will be starting from Owd Betts Public House, Edenfield Road, Rochdale, OL12 7TY and meeting at 5:30pm for a 6pm start.
This will be a vehicle based hunt which can be entered as teams or individuals according to your preference. However all participants with vehicles are encouraged to team up with those who do not in order to ensure everyone can take part in the event.
As a minimum you will require a 2M 144Mhz FM radio receiver or transceiver with a signal meter and a suitable antenna such as a small yagi or other directional antenna.
What you use is entirely up to you but whatever you decide, skill will be the most important factor here.
Attached in Microsoft Word format are the rules for the event.
Read them carefully. They are important.
On the day of the event participants will be given a printed copy of the rules along with emergency contact details of the fox or his/her representative.
You will need to arrive in good time to register your entry before the 6pm start.Will be good to see people attend this and maybe it will be come a regular event.
Please make the effort to support this event and please feel free to spread the word to members and non-members over the air.
The more people take part the better, and don’t forget there is a built in excuse for a beer and a bite at the end too.
An example DF antenna for you is the tape measure Yagi and you have just enough time to build it.
Any questions ask here or PM me and I'll pass them onto Eddie G7DNM who has organized it.
If anyone wants to come down to the club we meet at the Norden public library 7:30-9:30 Wednesday evenings.
Matty
G7FQW
DF Hunt Rules*
Thanks for reading!
73's, Lewis M3HHY.
Manchester, UK.
Note: The rules file is from an external source. I won't be held responsible should any files be lost or and damage caused to your computer be caused from downloading this document.
Friday, July 10, 2015
HYT HH-508S LED Antenna
So after watching these antennas for a year or so I decided to buy one. I got it more to see if it works than actually use it and the results were pretty interesting. I paid around £5 delivered from AliExpress and it came within about a week.
I got the red coloured one as it was the cheapest. Some of them go up to £18! It came in a little green slip case with the specs printed on the side; 2.15dBi, 50 ohm impedance and a max power rating of 10w. They come in green, yellow, blue and red.
I put it on the radio and did a bit of a range/audio/signal test to see if it worked and upon checking the clips I recorded, my home station lost signal from the antenna at the 2 mile mark as I descended down onto the motorway. I stopped the test here as I thought there was no way I'd get any more out of it. However, when I reached my destination 10.6 miles away I put a count out and the radio from home heard it which I found amazing from a Baofeng radio and what is essentially a stubby antenna which is sucking RF to power an LED! I did the same test the next night and got a 5/9 signal from the same spot. (See video in previous post).
I unscrewed the top that was glued in poorly to reveal the insides and the two LED's and a diode were just soldered to the inner core of the coax. Not sure how much stick it'd take before it came loose really. It also confirms that the LED's run straight off the RF from the radio.
The last test was to test the brightness of the antenna in the dark and it is very bright! All in all a great little antenna which sure beats the gimmicky flashlight on the Chinese radios. Not sure what the SWR is like on there but at 4w output power I don't think my Baofeng will suffer. Not that I intend to use the antenna much either!
I got the red coloured one as it was the cheapest. Some of them go up to £18! It came in a little green slip case with the specs printed on the side; 2.15dBi, 50 ohm impedance and a max power rating of 10w. They come in green, yellow, blue and red.
I put it on the radio and did a bit of a range/audio/signal test to see if it worked and upon checking the clips I recorded, my home station lost signal from the antenna at the 2 mile mark as I descended down onto the motorway. I stopped the test here as I thought there was no way I'd get any more out of it. However, when I reached my destination 10.6 miles away I put a count out and the radio from home heard it which I found amazing from a Baofeng radio and what is essentially a stubby antenna which is sucking RF to power an LED! I did the same test the next night and got a 5/9 signal from the same spot. (See video in previous post).
I unscrewed the top that was glued in poorly to reveal the insides and the two LED's and a diode were just soldered to the inner core of the coax. Not sure how much stick it'd take before it came loose really. It also confirms that the LED's run straight off the RF from the radio.
The last test was to test the brightness of the antenna in the dark and it is very bright! All in all a great little antenna which sure beats the gimmicky flashlight on the Chinese radios. Not sure what the SWR is like on there but at 4w output power I don't think my Baofeng will suffer. Not that I intend to use the antenna much either!
Thanks for reading!
73's, Lewis M3HHY.
Manchester, UK.
Manchester, UK.
Wednesday, July 8, 2015
Wednesday, July 1, 2015
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