http://www.worldwidedx.com/ Mobile, Base, or other citizens band services antennas. en Fri, 20 Nov 2009 22:24:08 GMT vBulletin 60 http://www.worldwidedx.com/images/misc/rss.jpg http://www.worldwidedx.com/ http://www.worldwidedx.com/cb-antennas/37203-sirio-827-a.html Fri, 20 Nov 2009 04:09:01 GMT does any one know much about the Sirio 827??????????? does any one know much about the Sirio 827??????????? ]]> CB Antennas radiodawg259 http://www.worldwidedx.com/cb-antennas/37203-sirio-827-a.html http://www.worldwidedx.com/cb-antennas/37188-rg59-coax.html Thu, 19 Nov 2009 08:42:35 GMT Im curious as to what the effect's would be using a single run for 18' of 75 ohm coax over 50 ohm coax in a mobile install.

I run one 4' wilson superflex roof mounted on cab of silverado. 18' of RG58 coax Mated to a uniden pc76.

I know 75 ohm is usaually for co-phased "trucker style" antennas.
and 50 ohm for single antennas.
This to match the radio.

But I had a cb shop (i won't mention their name) try and sell me RG59 coax for my single antenna.

what effect would this have? ]]> CB Antennas kiser sosay http://www.worldwidedx.com/cb-antennas/37188-rg59-coax.html http://www.worldwidedx.com/cb-antennas/37180-building-your-own-citizens-band-radio-base-antenna-temporary-one.html Thu, 19 Nov 2009 02:54:39 GMT question is there a way to build ur own CB 11meter bas antenna for a short while till a A99 get put up? If anyone can tell me that would be great.... question is there a way to build ur own CB 11meter bas antenna for a short while till a A99 get put up? If anyone can tell me that would be great. many thanx and 73
matt
undertaker776:thumbup1: ]]> CB Antennas undertaker776_cb http://www.worldwidedx.com/cb-antennas/37180-building-your-own-citizens-band-radio-base-antenna-temporary-one.html http://www.worldwidedx.com/cb-antennas/37146-imax-2000-results-finally-here.html Tue, 17 Nov 2009 04:39:59 GMT http://www.worldwidedx.com/cb-band-c...ar-bell-6.html

READ AND WEEP! :whistle: ]]> CB Antennas cominatyalive http://www.worldwidedx.com/cb-antennas/37146-imax-2000-results-finally-here.html http://www.worldwidedx.com/cb-antennas/37103-coils-rings-hairpins-gama-matches-whats-differences.html Fri, 13 Nov 2009 20:27:19 GMT coils , rings , hairpins and gama matches ..... whats the benefits and short commings of each over the others @ 27MHz. ? is one better... coils , rings , hairpins and gama matches .....

whats the benefits and short commings of each over the others @ 27MHz. ?
is one better performing with beams rather than omni antennas ?
is one better performing with omnis rather than beams ?

whats the best/most efficent matching devise for 27 MHz. ? on a 1/4 wave ? on a 5/8 wave ? ]]> CB Antennas BOOTY MONSTER http://www.worldwidedx.com/cb-antennas/37103-coils-rings-hairpins-gama-matches-whats-differences.html http://www.worldwidedx.com/cb-antennas/37092-review-battle-base-load-mobile-citizens-band-radio-antennas.html Fri, 13 Nov 2009 02:50:23 GMT I acquired a Sirio Z-180 for this test from a new member to the forum - "Russ". Russ is no newcomer when it comes to CB's. He has a bevvy of some of the finest current/past mobile DX or CB radios. In some cases - in triplicate! He will be writing the review from his end to follow - as to the quality of how well this antenna transmits to his receiver. The 'other' antenna in the 'battle' is the highly-acclaimed Wilson 1000. So; let it begin here...

After reading a similar article on http://www.worldwidedx.com/cb-antenn...o-antenna.html on this forum, I had the opportunity to see just what all they hype is about. The Sirio is a base load-type antenna - as is the Wilson 1000. So don't get your nickers in a bunch if the 10k Predator or a 102-inch steel whip isn't mentioned here. This is about current and somewhat available base load antennas. The Wilson 1000 is readily available; whereas the Sirio Z-180 had been discontinued last year. Sirio has another antenna like the Z-180; it is the Sirio 5000 and it is currently available.

I first became aware of the Wilson when I was still using a K-40, and I was never really impressed by the K-40. It was just 'OK'. I also got my Wilson from Russ. All it needed was some small repairs and a whip - which I ordered. When I put the Wilson on - I could instantly see a major difference in both TX AND RX. Blew the K-40 completely away. To say that I was impressed with the Wilson - is an understatement. Talking skip - no problemo...

I used the same magnetic base for both antennas; the 5-inch diameter Wilson 1000 magnet mount. Neither Russ or myself are running linears for this test. I used a stock Galaxy DX99V with a Astatic D-104/M6 handheld mic. My vehicle is a '08 Honda CR-V. One might consider that although the S-units shown don't appear to be large, impressive numbers - it is because both Russ and I have continuous urban sprawl between our two locations. We were both transmitting from ground level with gobs of intereference between us...

At first glance, the Sirio is about 12 inches taller than the Wilson. The base section uses up three of those 12 inches. It is light grey - and looks like the Avanti base load of older days. The stainless-steel whip diameter is MUCH greater than the Wilson; making the Wilson whip look flimsy by comparison. Overall height difference became apparent before too long. While driving around with the Sirio; I seemed to find more low branches on trees than the Wilson did. But it is sturdy in its construction; looking simple and all-business.

I checked the SWR when I first put the Sirio on the mag mount. On channel 20, I got a 1.3 - and didn't feel the need to get it better. The Wilson had the same SWR; so it was pretty much equal before the contest began. They will both adjust whip height by selecting the proper Allen wrench and moving the whip upward/downward to fine adjust the SWR - if need be. The test was taken on last Tuesday, on ch 20. I did not test it for 10 meter operation; but I may add that test to this thread a little later on...

I think it was at 2:30 PM/PST that we started the test. It's a good thing that we chose this time; as just three hours earlier skip was present and would have messed with the results. On the other hand; I know my Wilson had always been an outstanding performer when it comes to shooting skip. I would have liked to see how the Sirio would have done in that department. Russ began to speak and asked me which antenna I had put on - I was running the Sirio first. He hit me at 1 to 3 S-units -swinging- at a distance of about 9 miles from his driveway to my driveway. I then switched to the Wilson and got 1 to 2 S-units. Then, I repeated the switching of antennas a second time to make sure it was consistent. I also noted that the Galaxy was showing more watts swinging when I transmitted. I'm not quite sure what that means yet. Was it throwing more power out of the radio due to being more resonant? Or - was it because it was stifling the power? Hmmm...

It swings. The Sirio has a bit more swing. 1 S-unit gain of RX is nothing to sneeze at. Although that gain was in the swing S-units, I knew that my sensitive and stingy Galaxy meter wasn't lying (Note: for these reasons, I chose the Galaxy above the other radios I own for this test. The Galaxy's receive is exceptionally sensitive - while the meter is stingy - but very accurate). When one considers that the Wilson has always been the most popular base load antenna; I realized the Sirio is all that it had been cracked up to be - just a touch better. This Sirio also appears to be of a very sturdy build quality - not a wimpy thing. Not fantastically better - but better all the way round. I thought they would have been the same. Nope! The audio seemed a bit clearer and louder with the Sirio. But not by very much...

I think that the Sirio would be better off using a 7-inch magnetic base. The Z-180 is taller and heavier than the Wilson and needs to have better magnet support than I was providing with the 5-inch base. It is more top heavy because of the thicker-guage whip portion - which I consider a plus. I'm sure a tri-mag base would fill the bill - or perhaps be a bit overkill. The Wilson 1000 had 'wowed' me in the past as I drove across country this year. I talked skip and was extremely quiet when out in the boonies. Even around town; I felt the Sirio may have been a little bit more noise-sensitive than the Wilson. But not bu a lot - very little if any. If skip would have been available; well...

If you have a Sirio Z-180; then I think you have a slightly better antenna. I think that one can also be very satisfied with the Wilson - 'bang-fer-buck'. When new, the Sirio cost was about $65-70 - w/o the mag mount portion. A complete Wilson 1000 mag mount antenna sells for $65 new from Sparky's CB Shack - plus shipping. It really wasn't so much a 'battle' as it was a close horse race. If I had the chance to pick between these two before I got the Wilson; I may have well gone with the Sirio. If you have a Wilson; I wouldn't upgrade to the Sirio - unless it's a deal you cannot refuse. If you cannot afford a Sirio 5000; then a Wilson 1000 will serve you well. As it has for me; time and time again... ]]> CB Antennas Rob KI6USW http://www.worldwidedx.com/cb-antennas/37092-review-battle-base-load-mobile-citizens-band-radio-antennas.html http://www.worldwidedx.com/cb-antennas/37076-home-brew-hair-pin-balun.html Thu, 12 Nov 2009 15:11:23 GMT anyone ever try a split driven element , hair pin match and balun on a Maco beam ??? I have gathered all the parts to insulate , split and support... anyone ever try a split driven element , hair pin match and balun on a Maco beam ???
I have gathered all the parts to insulate , split and support the driven element
I also have coming a Balun with side lugs by Balun designs.... should be hear in a few days


i will post up some pics when i get it all done .. in the next few weeks

any input would be appreciated ]]> CB Antennas GunSlinger338 http://www.worldwidedx.com/cb-antennas/37076-home-brew-hair-pin-balun.html http://www.worldwidedx.com/cb-antennas/37073-proton-p99.html Thu, 12 Nov 2009 08:18:47 GMT Maybe it's been covered already, but i'll get striaght to it here. I've just returned to the hobby after some time away. My setup is as follow's. Proton p99 antenna 15' up to base (no ground radials). 50' Astatic RG8x with 7 turns stacked 5" diamter coils 1 ' under the antenna connection. this is to stop any common mode if that's correct. forgive me, im learning all over again. The rig is a Galaxy DX98VHP. This is powed by an Astron RS 35m. With a swr of 1:2. My question is this.

The proton 99 antenna is my current base. Very similar to the A99 in many aspects. The proton is 18.5 feet 1/2 wave, and 4 sections instead of the A99's three piece constuction. The p99 being 4 piece, puts each section at roughly 4.625' long. I want to remove the top section and replace it with a 102" s.s. whip I have. This will put the antenna at 22.275' roughly 5/8 wave correct?

I want to know if this is safe to do? Also what kind if any performance increase over stock it may have. Will adding my own g.p. radials consiting of 4 102" s.s. whip's make a big difference?

iIt just seems like my mobile setup. Uniden pc76xlw peaked tuned upgraded final, wilson 4' superflex on the top of the silverado cab. With swr at 1:2. Seem's to hear better than my base at time's. Or at least with less static. When I use the Uniden on the base antenna. The weather broadcast is very static filled. They are 15 -20 mies from my house. When its in the mobile its crystal clear parked in my driveway 20 feet from the base antenna. Could the rf choke coils be affecting this? ]]> CB Antennas kiser sosay http://www.worldwidedx.com/cb-antennas/37073-proton-p99.html http://www.worldwidedx.com/cb-antennas/37036-1-6-vswr-2-20-40-a.html Mon, 09 Nov 2009 22:54:16 GMT ive got my homebrew antena tuned to 1.6 across the cb band . its as low as it will go , its gets higher if i keep going . thats not terrible , but i... ive got my homebrew antena tuned to 1.6 across the cb band . its as low as it will go , its gets higher if i keep going . thats not terrible , but i was hoping for better . i think i know why and i just want some second opinions .

the feed point is only about 8 feet off the ground and the bottom of the sloped ground radials are about 1 foot off the ground . there is a rancher about 15 feet to one side of it and some 30ish feet tall trees about 10 feet away on the other side . one end also has about a 60 foot tree about 25 feet away . im thinking i cant tune any lower due to reflect from the house and trees and being so low . im also thinking that once i get it up in the air so the feedpoint is above the house at about 27 feet that it should go down some .

does that sound about right ? the verticle height is 22 1/5 feet .

http://www.worldwidedx.com/cb-antenn...rew-5-8-a.html ]]> CB Antennas BOOTY MONSTER http://www.worldwidedx.com/cb-antennas/37036-1-6-vswr-2-20-40-a.html http://www.worldwidedx.com/cb-antennas/37035-balun-imax2000.html Mon, 09 Nov 2009 21:44:16 GMT What benefits if any would you gain by adding a 1:1 balun at the feed point of a IMax2000 this antenna does not have the ground plain kit I have... What benefits if any would you gain by adding a 1:1 balun at the feed point of a IMax2000
this antenna does not have the ground plain kit

I have a nice 1:1 balun by Balun Designs i could use

any input ?? ]]> CB Antennas GunSlinger338 http://www.worldwidedx.com/cb-antennas/37035-balun-imax2000.html http://www.worldwidedx.com/cb-antennas/36985-mag-mount.html Fri, 06 Nov 2009 14:56:49 GMT i live in a block of appartments , my landlord wont allow me to put up a big antenna up . so i wondered if i drilled a plate to the brickwork outside... i live in a block of appartments , my landlord wont allow me to put up a big antenna up . so i wondered if i drilled a plate to the brickwork outside my top window an set a mag mount out on it would this work ok ??? or are there any good indoor antennas as i have a big roof space ..
cheers in advance ]]> CB Antennas kmacla http://www.worldwidedx.com/cb-antennas/36985-mag-mount.html http://www.worldwidedx.com/cb-antennas/36975-penetrator-500-a.html Thu, 05 Nov 2009 16:30:26 GMT I found what I think is a Penetrator 500. From old posts I've read it must be the original design as it has only 3 radials and no tuning network, just a uhf connector on the bottom of what looks like the loading coil.

It looks in pretty good shape, just missing one of the top radials and the bottom radials are only 45" long. They look like they were broken off a tv antenna. One end is crimped flat but the other is ragged, not cut like you'd expect. I found a 1975 manual (4 radial) and it lists the radials as 8' 9". Thought I'd fire it up before I go looking for new material.

Anyone know how the short radials will affect swr and anything electrical to check first?

Bruce
KB9OIQ
That's O not 0 IQ ]]> CB Antennas Traverler611 http://www.worldwidedx.com/cb-antennas/36975-penetrator-500-a.html http://www.worldwidedx.com/cb-antennas/36902-looking-way-better-mount-suv-antenna-other-options.html Sun, 01 Nov 2009 02:39:00 GMT I have my CB installed in a Nissan Pathfinder. Previously, I had it mounted to a bracket, which ran to the inside part of the lift hatch.... I have my CB installed in a Nissan Pathfinder. Previously, I had it mounted to a bracket, which ran to the inside part of the lift hatch. Unfortunately, I was getting some bad noise, and it appeared to be stemming from the rear window defroster (at least I think).

I moved it to the right rear passenger door frame, and have the bracket coming out. I have got my SWR down to about 1.5, maybe a little lower.

My problem is, when the door opens, one of the bolts for the mount scrape the door just a hair.

Any ideas? I had considered a magnetic roof mount, but my problem runs into that I park in a parking deck at work ever day.

By the way, the antenna I have on there is a Wilson 1000 (I believe). It is a 3' fiberglass antenna.

According to what I gather, I can get only about 10-12 miles out sitting in my driveway at night (this is through the woods and over the river).

Thanks. ]]> CB Antennas RBeach http://www.worldwidedx.com/cb-antennas/36902-looking-way-better-mount-suv-antenna-other-options.html http://www.worldwidedx.com/cb-antennas/36898-pics-progress-homebrew-5-8-a.html Sun, 01 Nov 2009 00:09:28 GMT ive got what i can on it done for the moment , just need a dry day and some help taking the homebrew 1/4wgp down and putting the new one up . gonna... ive got what i can on it done for the moment , just need a dry day and some help taking the homebrew 1/4wgp down and putting the new one up . gonna pull the ground radials off the 1/4 and use them on the 5/8 . and of course ill have to tune it after the grounds are on .
ill be using the ground wires and X off of this 1/4wgp on the 5/8 .

the ground radials/wires and the coax shield will attach to the bottom of the tuning ring on the single bolt .

i used noalox on the tube sections and between the radiator and tuning ring behind the 2 bolts on the verticle . those 2 bolts give a super tight and very solid connection and the ends make a nice little saddle for the u clamp to rest in and keep the antenna from sliding down......just in case the pressure treaded 2x4 shrinks enough to allow that .
i also used some plastic tubing on the U clamps so they wouldnt be a radiating part of the antenna .

for a temporary tuning place i put a 2 foot 2 inch pve pipe in a hole and im using a 10 foot 1 1/2 inch peice of pvc for a mast . pull it out for adjusting vswr and stick it back in to see what it is .


the center coax conductor will be held in place on the tuning ring with a wooden clothes pin for checking and setting vswr and then a hole will be drilled in the ring at best tuning place and and a ring terminal and SS nut and 2 bolt with a lockwasher will secure it . every nut and bolt has a flat washer and a lock washer .

the verticle is 22 1/2 feet tall and theres 6 inches of over lap on each section . theres just a simple rubber cap on the top . i do expect the vswr to possibly rise a point or 2 from tuning the feedpoint 9 feet off the ground to 23-24 feet in the air , but if i can get to 1.2 or less on the ground that wont be a issue in the real world .
a few more pics ....

with the verticle not fully telescoped it about 8 - 8 1/2 feet tall .


seems like its taking me forever :Frustrated: but it is comming along :yes: .
i hope to have it up and talking in the next few days . ill post a few more pics with it in the air and the ground elements installed when its up .

if you see where ive made any mistakes let me know !! :Laugh: ]]> CB Antennas BOOTY MONSTER http://www.worldwidedx.com/cb-antennas/36898-pics-progress-homebrew-5-8-a.html http://www.worldwidedx.com/cb-antennas/36852-radio-shack-102-mfj-108-a.html Thu, 29 Oct 2009 17:45:24 GMT Just an FYI, the 102 I had been using on my pickup broke at the threads. I was starting to get a weirdness in my RX that basically sounded like a... Just an FYI, the 102 I had been using on my pickup broke at the threads.

I was starting to get a weirdness in my RX that basically sounded like a broken RX signal. SWR was still an almost flat 1.05:1 across all 40 channels, even with power.

I decided to take the antenna apart and see if I had corrosion issues. One turn of the wrench and my 102 broke off (and I was turning it in the right direction)...took almost no effort, which surprised me in the fact I would have expected the thing to have blown over while driving. The shame of it is the fact the antenna is still perfect, but I now have no way to mount it...

They don't slide the whip fully into the base, which is hollow and obviously crimped to the whip. This leaves the threads of the base (which is also brass) supporting the load placed on the antenna. I had suspected this would be an issue, didn't expect it to happen in under a year.

I have since replaced it, but I was wondering if the MFJ 108" was similar in design? ]]> CB Antennas The Jerk http://www.worldwidedx.com/cb-antennas/36852-radio-shack-102-mfj-108-a.html