Does anyone know what the theory behind these antennas is? all i can seem to see is that the radiator is about a full wave – but what about the. Ok, I know I just posted about Moxon antennas, but doing an image search for moxon antennas led me to the CJU antenna. Amateur Radio,Projects,Antenna Designs, Double Quad Beam,2m & 70cm SSB, Ham Satellites I found the 70cm CJU or IO works well on mhz as well.
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I used the inner diameter of the perch and it was perfect. When somebody uses these frequencies because they do not know the rules we must try to explain them, we must always be polite.
CJU or IOIO Antenna for 70cm | PDØG HamRadio
Only a suggestion,it might have been more practical to have left some extra conduit next to the radiator,this will give you space to play with a director. Regarding AO51,on the other topic,I have put a few pass times.
The CJU Antenna – related links We thought you might also be interested in these additional web sites, selected from the same category: So this is the option which fit to our necessities, we gave up searching and became to work. To sum up, we must try to improve the UHF received cji.
Je reageert onder je Twitter account. Coax kabel eraan …Antennemeter erop, en over de gehele antehna goed. We can not expect to hear it clearly, we will have to make an effort to pick the modulation up from the noise and we must add that we have to change antrnna polarization and the frequency to face to the Doppler effect.
So we became again searching for a linear polarized UHF yagui, because if we work with a hand held antenna, to cku a circular polarized one is a nonsense. Pedro EB4DKA and I usually have long conversations and anrenna always have the same idea on the brain, to make the vju satellites easier to work so more people will be able to work them. We must take a lime flower tee before pushing the PTT the first time, because when we listen to our self modulation you will get nervous and you will not be able to say your locator and report signal properly which are the minimal dates to validate the contact.
Daarna een RF verzwakker tussen gezet om wat db-tjes te killen. This kind of behaviour interferes with satellite communications making them more difficult that they are. So far received 1 votes for a total score of 2. I would be happy just to know what the dbd gain was,I cannot even find that out.
K6LCSJan 15, antennna We must give other hams the opportunity to make more contacts. Get our latest news and links in your email. The scale is 1 – 10, with 1 being poor and 10 being excellent. My estimations from graph mhz 1: I am looking forward to listening to you soon!
KD8KSN QRV: The CJU Antenna
I wonder if it would have any gain by just using the radiator,then feeding it with a balun,a 4: Who is online Users browsing this forum: We were s earching around for some stuff suitable but we did not find it, so I talked about it with my father EA4ABV who apart from ham he enjoys raising canaries, and told me wait, perhaps the plastic stick where the canaries perch on qntenna the canary jails has this measurement.
Vul je gegevens in of klik op een icoon om in te loggen. If it’s still not acceptable, I’ll find a way to get to the local ham store only open during office hours to get a better coax.
E-mailadres verplicht Adres wordt niet getoond. Antfnna shorten it first to see how that works. On one cnu give the spacing as 50 mm,but on another site it is 51 mm. When I told Pedro what kind of stuff I have used to build the antenna we were burst out laughing for a while and he quickly baptized the antenna as the Canary Jail Umbrella antenna in relation to the stuff it was built.
Hier wat informatie wat ik over de CJU tegen kwam op internet. Je reageert onder je Facebook account.
Well, in a couple of afternoons I have just built the prototype, now Pedro EB4DKA had to test it because he is the expert at working in portable conditions. Also a couple of sites for pass times.
If anything, if you can imagine that the PVC is cu handle of a frying pan, then it seems to be directional on the cooking surface. Satellite Antenna Tips – Tips that may be of help with the most important part of an amateur ra Houd me via e-mail op de hoogte van nieuwe reacties.
Would it also work if the radiator was mounted at right angles to the reflector. Maybe a cut and see approach. He showed us how to program the HT memories and what skills we must develop to change the frequency while we are searching for the right polarization.
CJU or IOIO Antenna for 70cm
Glad to hear that the CJU lives up to its expectations. As for the PL, it was all i had spare, so it’ll have to do for now! But still using the same dimensions and spacing for the reflector.