W_a_s_p_i_e From United Kingdom, joined Feb 2002, 170 posts, RR: 0 Posted (10 years 8 months 1 week 4 days 4 hours ago) and read 3349 times:
Hi guys. Since a lot of you guys are tech people, i thought it would be best to ask you. I have a scanner, and I want to increase my reception. It has a BNC (I think thats what its called) connector at the top.
Could you please tell me what price range i would be looking at to increase my reception, by quite a lot, and where I should look.
H. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3 Reply 1, posted (10 years 8 months 1 week 4 days 3 hours ago) and read 3332 times:
It depends on how good the quality the antenna you want. Some outdoor antennas (called discone, if i'm not mistaken) can run about $40-90 USD, big improvement if u place one on the rooftop.
I have a telescoping whip with a BNC connection from Radio Shack, that one runs about ~$10 and it's a great performer!
Remember that 90% of the time the stock antenna is a poor performer, and also try to find out the "gain" of the antenna before you purchase. In the VHF (airband) range, the higher the gain, the better it will be
Airplay From , joined Dec 1969, posts, RR: Reply 3, posted (10 years 8 months 1 week 3 days 18 hours ago) and read 3275 times:
In the world of VHF antennas, its not the price you pay, its the height that counts. VHF frequencies don't "bounce" so well so line of sight is the rule of thumb.
If you can get that thing up high, you'll increase your performance even if you're using a coat hanger for an antenna.
One of the problems though, is that the longer you make the antenna lead, the more loss you'll have in the line. This isn't usually significant until you need more than 50 feet. Even in that case you can use low loss cable like RG-8 (50 ohms) cable.
B747skipper From , joined Dec 1969, posts, RR: Reply 4, posted (10 years 8 months 1 week 3 days 15 hours ago) and read 3253 times:
I have a Sony 2001 radio (HF and VHF) - For reception of VHF at home the antenna (Sony AN-1) is installed high on the roof, the antenna comes with a 15 meters long coaxial cable to connect to the radio - BNC connection -
The Sony AN-1 was about US$ 75.oo when I bought it, but that was some 15-20 years ago, I understand it is still sold commercially, same as the AN-3, the active HF antenna which I use for HF reception... that one is some $150.oo -
Since it is VHF, place the antenna as high as you can (line of sight) -
Wardialer From United States of America, joined Sep 2001, 1178 posts, RR: 0 Reply 5, posted (10 years 7 months 4 weeks 1 day 16 hours ago) and read 3159 times:
It also depends on the type of scanner and esp. the location. In my case, I live about 25 miles from KLAX and I just cant pick up ATC. Because why? Well, there are these hills called the Hollywood Hills, and believe me they do have an impact. The highest peak of them all is about 1800 feet (Mt. Lee).
As stated above, these could have alot of impact. Also, get a good rotator, I use one for my radio what I use to talk on Ham Radio. Line of Sight is the the the MOST important of all.
Since I just received my FCC tech license for Ham Radio, if you guys need some answers than fill free to ask to me.
JetTrader From United Kingdom, joined Oct 2001, 586 posts, RR: 12 Reply 7, posted (10 years 7 months 4 weeks 5 hours ago) and read 3111 times:
A simple home-made antenna will work better than any discone...provided you "tune" it for the required frequency of operation.
For a frequency of 120Mhz (somewhere near the middle of the airband - you can of course use a more specific frequency like your local tower or approach) the wavelength is 2.5 metres...give or take a few mm
A simple half wave dipole, resonant at this frequency, can then be constructed using a length of wire just 1.25 metres long.
Cut your length of wire in half and attach it to a suitable length of dowel (or similar). Attach a length of 50 ohm co-ax to the centre point (where you made the cut) ...making sure there is about an inch gap and that there is no short circuit.
Attach a BNC connector to the other end of the coax and you're good to go!
Any book (or website!) on antenna theory will include diagrams and probably better instructions. I use one of these and it really pulls in those stations that would otherwise be down in the noise!
H. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3 Reply 8, posted (10 years 7 months 4 weeks 3 hours ago) and read 3075 times:
Also...look for those antennas have "magnet mount", those magnetic mount can "stick" your antenna on a metal object and it acts as a ground. The bigger the "metal object" (ie. Car) the better the antenna perform!
I have my VHF/UHF antenna placed on up of my radiator with a magnet mount and it works WELL!
Dennis (another ham radio op. N2KIN)
p.s. I wonder how many ham radio operator are in this forum? Give me a shout!