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RCI 2990
| | Posted on Saturday, December 29, 2001 - 4:32 pm: | 
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Hello.
Anyone out there still have a P 500 that they still use?
I found one i got off a young guy a while ago at a yard sale and bought it for 15.00 because he said it didnt work right. Needed to do some work to get it working again but it has an SWR of 1.2=1 all 40 plus.. |
Scrapiron63
| | Posted on Saturday, December 29, 2001 - 7:13 pm: |
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I had one of them for over 20 years, gave it to a friend and he's still using it. I think they were the best GP made, had a gain of about 5.5 db I believe. The are long and heavy for a groundplane, about 22 feet and 8 inches long, the radials are 8 feet. |
bruce
| | Posted on Sunday, December 30, 2001 - 8:17 am: |
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Scrap a 5/8 wave has about 2 db gain over a isotropic ant ( which does not exsist ) Real gain is a small amount over a 1/2 wave and as much as 3db over a 1/4 wave but to be honest ive never seen anything that i could measure. Now if you stack 2 of them one on top of each other like a ringo ranger you can get gains on as much as 5 db but your talking a 45 foot tall ant at cb. Cophaseing 2 5/8 wave antennas works very well ive done it on 6 meter fm with the proper swith you can make a fairly good 2 element beam out of them. Mosley dipimate was made for 10, 6 and 2 meters i still use my 6 meter one it was bought in 1974. It is 5/8 wave at 52.525 and has outlasted 2 houses and several radios.
bruce |
Scrapiron63
| | Posted on Sunday, December 30, 2001 - 3:16 pm: |
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Your right Bruce, I should have qualified that statement with, that was the 'advertised' gain of the penetrator 500, we know how the 'truth in advertising" goes, hi-hi... I knew a guy way back that ran stacked Super Mag groundplanes. He had them on a Rotor. I also know some guys down in Mississippi, just south of Memphis, I talk to them ground wave at night, or use to, several of them are running stacked A99s. They sent the directions of how it was done, I think I lost them, but they were set up like a two element beam, the back 99 was the driver, the other acted as a director. They do a pretty good job. Why they wanted to go to the trouble and time beats me, they could have bought a Maco 3 beam cheaper, and it would be much better. Scrap |
bruce
| | Posted on Sunday, December 30, 2001 - 8:58 pm: |
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scrap somewhere in 40 years of folders i have the hygain flyer on how to stack and phase vert antennas it is very intresting for a 4 page booklet |
RCI 2990
| | Posted on Tuesday, January 01, 2002 - 1:31 pm: |
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Gain! schmain! As long as a guy can "git out" and hear good is all that matters!! I myself never get caught up in all that mind numbing technical mumbo jumbo that looks good on paper or out of a book or on some silly scope.. I just hook up my stuff and match it in and talk on it! :-) |
bruce
| | Posted on Tuesday, January 01, 2002 - 6:37 pm: |
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rci 2990 so do i except i have been BURNED too many times back years ago BELEVING what the seller spects said. The law of antenna gain is simple the bigger the more gain no mater what it is or what freuqency it is on. |
RCI 2990
| | Posted on Wednesday, January 02, 2002 - 9:14 pm: |
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ummm like the A99 being 9.9 DBi gain and the I max 2000 being 12.5 DBi deal??? I remember that scheme very well and yes I was BURNED on it too when i first got into CB years ago and got my first A99!!!:-( What i dont get is why the CB antenna manufacturers use these lame gain figues but the ham guys all seem fairly straight on the gain facts!! What? Is it because the CB antenna manufacturers think us CBers are a bunch of low IQ retards that will believe anything we are told????? |
bruce
| | Posted on Thursday, January 03, 2002 - 12:01 am: |
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WELL..... just kidding 2990 your right and one thing that gets me into trouble all the time is bitching about people like jogunn and the a99 and others who think all cbers are as dumb as a rock. The rules are simple a 1/2 wave ant has slight gain over a 1/4 wave if you stack 2 verticaly and phase them correctly you can get about 5 db of gain that is DBI. As for beams 3 el is 6 dbi 6 el is 9 dbi 12 el is 12 dbi go look at jogunn. i'll bet they are twice that RIGHT! See as a long time radio user i know better but you are so right the joe six pack CBer they are aiming there junk at is not a tech and they know it. GOOD sourse of info WWW.ARRL.ORG and any of the ARRL books... trust them
bruce |
Triplecguy
| | Posted on Thursday, January 03, 2002 - 4:36 am: |
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Yes the truth has finally been told! We as CB'ers are "A buch of low IQ retards that will believe anything we're told" LOL!!! Don't get me wrong, I have met a few "individuals" over the few years that I've been CBing that I think should not have been allowed to breed, but I think the real scheme with the gain argument is simple. Whether or not it is factual, it makes me feel better because it says a certain amount of gain is promised on the box. And under "certain laboratory conditions" you never know what can be achieved. A number of years ago, I purchased a graphic equilizer/amplifier that stated 200 watts. Now the funny thing is that it only had a 5 amp fuse. Multiply 13.8 volts by 5 amps and you get 69, which according to theory should be 69 watts if 100% efficient. Well according to what I've read, at best 40% effieincy is obtainable. So a friend of mine called the "factory support hotline" that was listed on the package and talked to a "tech" who explained that 200 watts was peak and not always obtainable, but that the amplifier was capable of 200 watts! Every wire that came out of the unit was a #18. But it doesn't matter. They could have put that it was a thousand watts, and it still would have sold! I've never heard of a law suit over false advertising of output of anything electronic. Also, I read elsewhere on the forum about a 7 watt CB being advertised. As I remember, the one I saw stated 7 watts "input" power. I'll bet a thousand slack jaws thought they had their hands on a CB that was somehow more powerful than the other 4 watt models, and they better buy it right then and there before they're gone. And I'll bet some marketing company was watching the dollars flow in. If you want gain put a 1/4 wave, 1/2 wave or full wave on a 300 foot tower and shoot a couple hundred watts through it. On a vehicle, put on a 108" whip and be happy. If you want, I'll send you an e-mail saying that you have an IQ of 150. If says it, it must be true!! LOL(:-) I'll get off my soapbox now.
Big Dan |
bruce
| | Posted on Thursday, January 03, 2002 - 11:43 am: |
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Hey Big Dan you dumb as a rock CB er!!! Hi Hi Hi
Ant it the truth you know that the adds target thoes who know the least. See one diffrence between Hams and CB ers is testing although it proves very little some basic knowlege of radio has to be learned to pass even a code free test. So the company that targets the ham HAS to be somewhat more honest than the people going after the cb buck. Look at adds for any 2 meter antenna the gain figures will fall within the range of realty unlike so many of the same adds targeted at a soley CB buyer.CB had a great mag called CB horizons sadly it failed but it was put out by HAM RADIO and was technology very sound. The CB buyer realy has no one to turn to for equiptment reviews or tech data ( other than this forum ) and depend on others they hear on the radio which as you are well aware probley know no more than he does. 7 WATTS IN you got to love them ! like i was saying about audio when i worked at sears if you dont have a starndard all rating of products is worthless .... just look at tubro tune a major beef of no standard = worthless. |
RCI 2990
| | Posted on Thursday, January 03, 2002 - 1:39 pm: |
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Ummmm i hate to say this but i was once bit by the "Turbo Tune" deal....... Worthless POS IMHO!
I wonder sometimes why EE-you-know-who is still around.. They gouge people with their junk Turbo Tunes and other assorted rip offs. Then the forum they have is run by Tyrants that will ban you if you challenge them with querys about thier inflated gains and theorys that a well read CBer knows damn well is WRONG! They look at the CBers that "know the game" as evil people that are out to run them under by telling the ones that know little about radios the truith i guess!!! they prey on ignorance thats what they make their mighty $$$'s off of just plain ignorance.. |
bruce
| | Posted on Thursday, January 03, 2002 - 2:58 pm: |
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2990 see we agree if the cbers were beter informed about radio a lot of " dealers" would go by by as they should.... and take tubro tunning with them |
Vernonott
| | Posted on Thursday, January 03, 2002 - 3:04 pm: |
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Gentlemen:I totally understand where you're coming from and your beef with manufactures of questionable advertisements.Personally I don't pay much attention to the statements on the product boxes or the commercials.A few years ago I bought a A99,a Imax99 & a Army big stick.I erected each antenna on the same day under the same conditions on the same radio and talked to several of my contacts to see which antenna had the most signal strength and best sound.On my setup in my location the A99 had more signal strength and a better sound.It was about 1db weaker on the receive.Since that time I have run the A99 faithfully and haven't questioned what gain it may or may not have.The other antennas,I sold for what I had invested in them .My point is the antenna is now one less item I have to concern myself with.73 |
RCI 2990
| | Posted on Thursday, January 03, 2002 - 8:34 pm: |
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Im sorry if ive been kinda blunt about things but thats one thing that gets me fired up on my soapbox is fooling people with total BS just to make $$$. And EE-something-or-other does this very very very well!!!!!! |
Jaymojave
| | Posted on Sunday, April 28, 2002 - 2:30 pm: |
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Hello RCI 2990:
I can e-mail you the assembly instructions.
I have rebuilt quit a few of the Penetrator 500
5/8 wavelength antennas.
Jay in the Mojave |
Marconi
| | Posted on Monday, April 29, 2002 - 6:57 am: |
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Eric, send me you mailing address again so I can send you these docs you requested. I owe you, you know. Go see my stuff on Jay's antenna, it IS GREAT!
BTW, I have been saying it for a long time also, I agree with Vernonott about the antennas he mentions.
Eddie Marconi |
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