chops
Active member
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- #1
So tell me, do any of you guys have experience with DIY antennas?
As I mentioned in the tuner thread, I'm just using a simple folded dipole "T", and in fact just ordered another one that will be here this Friday along with the new to me Yamaha TX-1000 which is also arriving Friday. Yes, I ordered another one of these simple dipoles for now, but this one that I just ordered has the PAL F-connector built onto it. I was going to buy a 300 to 75 ohm adapter at RatShack which costs $6.99 + tax. I ordered the entire antenna on Amazon with free shipping for $5.99, and no tax! Yes, it's only one dollar, but it's also one less connection required.
Anyway, I'm getting sidetracked here...
For starters, the wall I have the dipole on faces north and south which is a good thing, as the two major cities the radio stations are coming from are to the east and west of me (Tampa & Orlando), and since these dipoles are directional, that works out to my advantage as my town in equal distance between the two, about 50 miles each way. Plus the fact of being roughly 25' above ground, being on the 3rd floor also helps.
The reason I'm asking about DIY antennas is because even though some of these stations come in strong and clear, some of them come in strong but with a bit of static. Two of which come to mind, both in Tampa and not too far from each other either, as in literally right down the street from each other. Probably just a mile or two. One is 88.5 WMNF, with radiated power of 6,650 watts and elevation of 1539 feet. I get a full strength signal and it comes in crystal clear. Then right next to it is 89.7 WUSF with a radiated power of 69,000 watts and an elevation of 1033 feet. Again, a full strength signal, but with a bit of static.
I'm guessing that maybe because my tuner (Yamaha TX-540) has no way of de-tuning and/or attenuating the signal, it's overloading the poor thing and causing distortion and such. I know for a fact it does that on a few of the other stations, but I could care less about them because they are only rap and hip-hop. Then again, since this is actually hiss/static and not distortion, I'm not too sure what the cause is.
I eventually want something better than these standard, cheap dipoles, and possibly with a little gain without the use of amplification. I was considering the Magnum Dynalab ST-2, but I keep getting mixed reviews about it. It's omni-directional, so automatically it has less gain than the dipole. A lot of people say they get better results with the folded dipoles!
I'm looking into something like a full bandwidth loop antenna, or even a cubical quad antenna, both of which can have an average gain of 3+ dB. That's supposed to be the equivalent of double the radiated power output of the station. This is good since an even stronger signal is a quieter signal in theory, and the TX-1000 has very high overload rejection. Plus, it has the ability to de-tune and/or attenuate the signal. Building one of these types of antennas would also help me pull in a couple of desirable yet weak stations that I used to listen to a long time ago. Oddly enough, I can pick them up in my car fairly decently, so I know they still play good music.
BTW, being in an apartment, there's no option for an external antenna as much as I'd like one.
So, if anyone has any suggestions, please feel free to pitch in!
As I mentioned in the tuner thread, I'm just using a simple folded dipole "T", and in fact just ordered another one that will be here this Friday along with the new to me Yamaha TX-1000 which is also arriving Friday. Yes, I ordered another one of these simple dipoles for now, but this one that I just ordered has the PAL F-connector built onto it. I was going to buy a 300 to 75 ohm adapter at RatShack which costs $6.99 + tax. I ordered the entire antenna on Amazon with free shipping for $5.99, and no tax! Yes, it's only one dollar, but it's also one less connection required.
Anyway, I'm getting sidetracked here...
For starters, the wall I have the dipole on faces north and south which is a good thing, as the two major cities the radio stations are coming from are to the east and west of me (Tampa & Orlando), and since these dipoles are directional, that works out to my advantage as my town in equal distance between the two, about 50 miles each way. Plus the fact of being roughly 25' above ground, being on the 3rd floor also helps.
The reason I'm asking about DIY antennas is because even though some of these stations come in strong and clear, some of them come in strong but with a bit of static. Two of which come to mind, both in Tampa and not too far from each other either, as in literally right down the street from each other. Probably just a mile or two. One is 88.5 WMNF, with radiated power of 6,650 watts and elevation of 1539 feet. I get a full strength signal and it comes in crystal clear. Then right next to it is 89.7 WUSF with a radiated power of 69,000 watts and an elevation of 1033 feet. Again, a full strength signal, but with a bit of static.
I'm guessing that maybe because my tuner (Yamaha TX-540) has no way of de-tuning and/or attenuating the signal, it's overloading the poor thing and causing distortion and such. I know for a fact it does that on a few of the other stations, but I could care less about them because they are only rap and hip-hop. Then again, since this is actually hiss/static and not distortion, I'm not too sure what the cause is.
I eventually want something better than these standard, cheap dipoles, and possibly with a little gain without the use of amplification. I was considering the Magnum Dynalab ST-2, but I keep getting mixed reviews about it. It's omni-directional, so automatically it has less gain than the dipole. A lot of people say they get better results with the folded dipoles!
I'm looking into something like a full bandwidth loop antenna, or even a cubical quad antenna, both of which can have an average gain of 3+ dB. That's supposed to be the equivalent of double the radiated power output of the station. This is good since an even stronger signal is a quieter signal in theory, and the TX-1000 has very high overload rejection. Plus, it has the ability to de-tune and/or attenuate the signal. Building one of these types of antennas would also help me pull in a couple of desirable yet weak stations that I used to listen to a long time ago. Oddly enough, I can pick them up in my car fairly decently, so I know they still play good music.
BTW, being in an apartment, there's no option for an external antenna as much as I'd like one.
So, if anyone has any suggestions, please feel free to pitch in!