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Raising the "F" layer?
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J. Ken Wirsing <radioguy@...>
Perhaps if we could clone enough of those 5 kw indestructable amps,
we could heat the atmosphere before the contest to get the MUF at a high level. I am thinking if the 5k were aimed into a long wire, low and nonresonant except at perhaps some useless freq like 4 MHz, we could expend enough energy in the tuner and wire to heat the atmosphere. Yes, some old light bulbs would do in the absence of a long wire. I think I could try to load the gutters on the house. On a more serious note, I am ready to try PSK on 6m. I am in Grand Rapids, MI, and give me a freq and date/time. (Is that within the rules?) Best 73s to all. Ken KF8OR |
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AA8QQJMauch@...
If we was really smart, we'd all be real nice to N3DQU and ask him to get out
his "propagation equipment?" to help us out. de AA8QQ |
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n0bhc
Don, You might want to hang on to the rotators. It is really important to get the azimuth and elevation correct when running that much power on the vertical. Bob, N0BHC |
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K4FBP
I have been reading about hooking 3-One K amps together, and the use of a
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fluorescent lamp for a "broad-band" antenna. I must get in on this! I have a Gap Challenger Vertical for sale, complete with rotator....Hardware was used in last year's Field Day... 73, Don, K4FBP -----Original Message-----
From: AA8QQJMauch@... [mailto:AA8QQJMauch@...] Sent: Wednesday, April 03, 2002 10:00 AM To: 070@... Subject: Re: [070] Raising the "F" layer? If we was really smart, we'd all be real nice to N3DQU and ask him to get out his "propagation equipment?" to help us out. de AA8QQ |
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Bernie <kf4fhs@...>
Hey Don,
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I'm glad to see that you have some experience with using a rotator with a vertical, I need some technical advice. I've tried using the same setup as you, but mine keeps unscrewing the coax off my vertical every time I turn the rotator. You got any suggestions on how to fix this ? 73, Bernie / KF4FHS ----- Original Message -----
From: "Don Adamson" <don.adamson@...> To: <070@...> Sent: Thursday, April 04, 2002 11:49 AM Subject: RE: [070] Raising the "F" layer? I have been reading about hooking 3-One K amps together, and the use of aa Gap Challenger Vertical for sale, complete with rotator....Hardware wasused in last year's Field Day... |
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Steve W3HF
Hey Don,Bernie - I know you didn't ask me, but I feel I owe you something for your wonderful suggestions about power combining my radios. Simply turn the rotator upside down. That way the coax connection will be tightened, not loosened! Steve W3HF |
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Dick Thompson <wb0dul@...>
Bernie, you will need to do what I did; namely rotate it only
to the right. That way the coax connector stays tight, and won't fall
off.
73,
Dick
WBØDUL@...
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Bernie <kf4fhs@...>
Now why didn't I think of that guys. Ain't it funny how something that can
seem so complicated, be so simple. Thanks So Much, & 73, Bernie / KF4FHS ---------------------------------------------------------------------------- --------------------------------------------- Bernie ----------------------------------------------------------------------------- ---------------------------------------------- Bernie, you will need to do what I did; namely rotate it only to theright. That way the coax connector stays tight, and won't fall off. 73, Dick |
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AA8QQJMauch@...
Bernie,
You just got to use a pair of Vise Grips to turn the PL259 into a sort of crimp connector. de AA8QQ - Jay |
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K4FBP
Yes Bernie...I had that same problem, but I solved it by drilling through
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the connector and placing a small cotter-pin straight through to prevent the unscrewing, thereby allowing the coax to twist. After 4 hours of operation, the coax had enough twist in it to return the vertical to several previous headings, thereby giving me a circular polarized signal on any band.... 73, Don K4FBP -----Original Message-----
From: Bernie [mailto:kf4fhs@...] Sent: Thursday, April 04, 2002 9:38 PM To: 070@... Subject: Re: [070] Raising the "F" layer? Hey Don, I'm glad to see that you have some experience with using a rotator with a vertical, I need some technical advice. I've tried using the same setup as you, but mine keeps unscrewing the coax off my vertical every time I turn the rotator. You got any suggestions on how to fix this ? 73, Bernie / KF4FHS |
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Bernie <kf4fhs@...>
OK Guys, I think with your help, I've got my problem worked out.
Now let me see if I've got this right, I mount my rotor upside down, then drill the connector and install a cotter pin and crimp the connector with vice grips for added security, and always make sure I turn the rotor to the right. Now, as Don pointed out that the natural twist, after a few hours of operation, will make the antenna circularly polorized, seems to me like somewhere that I heard that the folks who talk through them satellites all use circularly polorized setups, so I'll be able to work PSK31 through the Birds. Man, I'm gettin really excited about all this, I can't wait to get an EQSL from the International Space Station ! Thanks & 73, Bernie / KF4FHS |
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Tom <tomias@...>
Hi Bernie,
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One important enhancement that has been neglected. Examine your coax to determine the design characteristics. Should the lettering on the coax read from the radio to the direction of the antenna, then it is of the transmitting variety .... lettering reading from the antenna down to the radio would be the receiving variety .. although you may use one cable for both functions ... much better to use one of each design in parallel to optomize both your transmit and receive capabilites. There is a down side to this ... It is harder to twist cables in parallel... you may need a surplus prop pitch motor! Tom, k3psk ----- Original Message -----
From: "Bernie" <kf4fhs@...> To: <070@...> Sent: Friday, April 05, 2002 9:53 AM Subject: Re: [070] Raising the "F" layer? OK Guys, I think with your help, I've got my problem worked out.the right.an EQSL from the International Space Station ! |
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Bernie <kf4fhs@...>
Tom,
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I've come up with a solution to this problem. I'm now feeding my vertical with 300 ohm ladder line, and impedance matching is not a problem, because the 50 ohm feedpoint impedance goes into 300 an even number of times, so matching is not needed. I use one conductor of the ladder line for transmit and the other conductor for receive. Pretty slick, eh ? 73, Bernie / KF4FHS ----- Original Message -----
From: "Tom" <tomias@...> To: <070@...> Sent: Friday, April 05, 2002 9:55 AM Subject: Re: [070] Raising the "F" layer? Hi Bernie,one of each design in parallel to optomize both your transmit and receivethen withdrill the connector and install a cotter pin and crimp the connector allvice grips for added security, and always make sure I turn the rotor totheright. theuse circularly polorized setups, so I'll be able to work PSK31 through getBirds. Man, I'm gettin really excited about all this, I can't wait to anhttp://docs.yahoo.com/info/terms/EQSL from the International Space Station !
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Tom <tomias@...>
Bernie,
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Thats a wonderful solution. Submit that to QST for publication under the header "We don't need no steenkin coax"! Tom, k3psk ----- Original Message -----
From: "Bernie" <kf4fhs@...> To: <070@...> Sent: Friday, April 05, 2002 6:36 PM Subject: Re: [070] Raising the "F" layer? Tom,matching is not a problem, because the 50 ohm feedpoint impedance goes into 300 anthe ladder line for transmit and the other conductor for receive. Prettyslick, eh ?to thedetermine the design characteristics. Should the lettering on the coax toradio would be the receiving variety ..one liketheright. http://docs.yahoo.com/info/terms/allsomewhere that I heard that the folks who talk through them satellitestheuse circularly polorized setups, so I'll be able to work PSK31 throughgetBirds. Man, I'm gettin really excited about all this, I can't wait toanhttp://docs.yahoo.com/info/terms/EQSL from the International Space Station !
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