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Need HF Antenna advice
I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base
rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? -- Bob D. ND9B |
Need HF Antenna advice
"Bob D." wrote in message m... I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? -- Bob D. ND9B Try this one: www.k1jek.com This is a dipole that comes in lengths of 73' and 140' respectively. The short one covers 80-10, the longer one, 160-10 Meters, and perhaps, 6 Meters. I've had the long one for a couple of years, and with a tuner, I've had EXCELLENT results! With that 80 foot tower, you'd get some nice contacts! 73 Jerry |
Need HF Antenna advice
Jerry wrote:
"Bob D." wrote in message m... I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? -- Bob D. ND9B Try this one: www.k1jek.com This is a dipole that comes in lengths of 73' and 140' respectively. The short one covers 80-10, the longer one, 160-10 Meters, and perhaps, 6 Meters. I've had the long one for a couple of years, and with a tuner, I've had EXCELLENT results! With that 80 foot tower, you'd get some nice contacts! 73 Jerry Hmmmm This one seems to be another multifolded resonnator non-radiator concept from the $hitizen bandits. If you need such bull****, there's no need to pay buck$ for it if you can homebrew it so easily. If you cannot afford homebrewing, then go for a real antenna! Cushcraft used to make good multiband verticals such as the AP8A or the R7/7000-R8 series. If you already have a "tuner" you can homebrew a 1/9 Un-Un à la ZX-Yagi MTFT (Miracle Tranformator For Totaly-dumb-people) and hook it to your 80' pole... Guarated under 20$ including plastic box, silvered copper wire, inox screwery and BNC socket. For low band action you can slide a ferrite bar in it. 73 de F8BOE Olivier ...-.- |
Need HF Antenna advice
Bob D. wrote:
I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? Hello, By the way, there is also the OCFD (Off Cetered Fed Dipole) covering from 80 up to 10 + eventually WARCs or the Levy, but with the Levy you'll need a specific Levy tuner... But it can be easily homebrewed. And the antenna is one of the last part of the radio equipment we can afford experimenting with, without spending much money (nor time). 73 de F8BOE Olivier ...-.- |
Need HF Antenna advice
Bob D. wrote:
I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? Take a look at the 88 Ft center fed Dipole. 80--10 Meters with pretty good results. You can find out more at http://www.cebik.com/edz/88.html Of course you'll need a good Antenna Tuner also. Good luck 73 Dave kc1di |
Need HF Antenna advice
On Mon, 23 Apr 2007 22:54:09 -0400, "Bob D."
wrote: I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? I have been tinkering with an SGC-237 Tuner and I have concluded: A tuner will match most anything. A tuner does not change the antenna system, it only matches it. An antenna still works best at its resonant frequency. (best is in the eye of the beholder!) If you use a vertical radiator against ground, the ground system is still as important as the radiator. Evaluating the configuration is mainly guesswork. You can save yourself a lot of time and effort by modeling a given configuration with EZNEC. Your antenna begins at the connection to the tuner. John Ferrell W8CCW "Life is easier if you learn to plow around the stumps" |
Need HF Antenna advice
On Mon, 23 Apr 2007 22:54:09 -0400, "Bob D."
wrote: I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? What if he goes near the top, places the tuner there, one side to the tower, the other side to an 80 foot wire sloped out as far as he can go to the edge of his property, and as high as possible.? -- 73 for now Buck, N4PGW www.lumpuckeroo.com |
Need HF Antenna advice
John Ferrell wrote:
An antenna still works best at its resonant frequency. (best is in the eye of the beholder!) "Works best" needs a definition. An Extended Double Zepp is not resonant but "works better" than a resonant dipole by about 3 dB broadside. -- 73, Cecil http://www.w5dxp.com |
Need HF Antenna advice
On Mon, 23 Apr 2007 22:54:09 -0400, "Bob D."
wrote: I'm contemplating a Yaesu TF-857D with the FC-40 antenna tuner as a base rig. I'd like to cover as many HF bands as possible with a simple wire antenna. I'm on a small lot with an 80' tower. So anything I put up is going to slope! I've never used an antenna tuner before. I believe the FC-40 is weather proof and meant for remote use. If I slope a random wire and end-feed it, should the tuner go up on the tower or stay on the ground? (In other words, which end should I feed?) How should I ground the FC-40? Anything better than a random wire that is still simple and covers all/most of the HF bands? A simple end fed wire is complicated by the fact that it will need a good ground system. A sloping dipole, or an inverted V dipole coming off your 80 foot tower, will need no ground system, though. So the dipole might be easier. bob k5qwg |
Need HF Antenna advice
Cecil Moore writes:
John Ferrell wrote: An antenna still works best at its resonant frequency. (best is in the eye of the beholder!) "Works best" needs a definition. An Extended Double Zepp is not resonant but "works better" than a resonant dipole by about 3 dB broadside. Once it's up, you can't rotate it. Whether the gain and the nulls are a net advantage or not depends on the application. 73 LA4RT Jon |
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