Sigma 5/8 Cb Antenna
5/8 WAVE COMMERCIAL GROUND PLANE WITH RADIALS MACO Antennas - Division of Charles Electronics, LLC 302 S. East Street, Mount Carroll, IL 61053 815-244-3500. REMEMBER THIS ANTENNA REACTS TO EVERYTHING IT CAN SEE. THIS MEANS THAT TREES, POWER LINES, BUILDINGS, AND OTHER ANTENNAS AT THE SAME HEIGHT WILL. Sigma Venom 5/8 wave Silver Rod CB Base Station antenna. Sigma Venom 5/8 Wave High Gain The Sigma Venom 5/8 Wave H/Y Gain has 3 ground plains radials positioned on the bottom. This allows it to perform better on transmit than the standard 5/8 Power Handling: 1000 Watts Length 5.80m Gain 4.2 db Impendance 50 Ohms Frequency 26-28 MHz SWR 1:1.3. SIGMA VENOM 5/8 wave Silver Rod CB Base Station antenna 10 & 11 Meters - $71.35. Menu Home About Us Contact Us Delievery Returns View Feedback Add to Favourites Main Description PLEASE NOTE THAT WE SHIP TO ALL AREAS OF THE UK EXCEPT FOR THE CHANNEL ISLANDS USING OUR ECONOMY 3 TO 5 DAY DELIVER SERVICE. NEXT DAY SHIPPING IS BASED ON UK MAINLAND ONLY.
- Sigma Venom 5/8 Wave Cb Antenna Dealers
- Sigma 5/8 Cb Base Antenna
- Sigma Venom 5/8 Wave Cb Base Station Antenna
Additional Information HF Vertical Antenna Band12 meters10 metersThese true full size 5/8 wave, 10/12 meter Hy-Gain SPT-500 Vertical Antennas were a legend in the '70s-now they're back to claim that status once again!A full size radiator with a lower radiation angle concentrates power closer to the horizon where you want it. SPT-500 antennas measure 22 ft., 9.5 in. High with large diameter, heavy-wall tubular construction that puts the new SPT-500 Super Penetrators among the top omnidirectional antennas around!Four full-length radials and special machine-formed brackets give extra talk power and overall strength. Electrical performance has set a new standard with the use of a longer radiator and double-matching tuning with linear phasing techniques that provide a low SWR and more radiated energy. Double-matching also provides a DC path to ground to drain off precipitation static, resulting in extremely low-noise antennas capable of high power.SPT-500 antennas are specifically designed to accept up to 1.5 kilowatts with low loss. Order your Hy-Gain SPT-500 Vertical Antennas from DX Engineering! I have had a few Penetrator 500 antennas over the years and this one has been the worst as far as quality of manufacture.None, absolutely none of the vertical or horizontal elements will securely mount to the next one it connects to.
It seems that all of the swaged down joints were done incorrectly. None of the clamps will close the splits and secure the next element.Sloppily done. Update.I contacted Hy-Gain (MFJ) and submited a 'problem ticket'.Customer Service has offered to supply me with new replacement vertical and horizontal tubing elements.I will see how all fits when I receive them. As a USAF CommTech, a Commercial CommTech and an Amateur for 31 years, I have assembled many types and varieties of antennas.
Sigma Venom 5/8 Wave Cb Antenna Dealers
My experience with the SPT500 was exceptional. Everything fit together nicely, not a single problem except for the screw that holds the capacitance hat radials was about a fraction too long so I had to grind it down so that it would tighten and hold the radials securely. I am very pleased with the quality and the performance on 10 meters. After reading other reviews, I don't understand how anyone could not possibly consider this a high quality antenna. Nice job HyGain!
As a USAF CommTech, a Commercial CommTech and an Amateur for 31 years, I have assembled many types and varieties of antennas. My experience with the SPT500 was exceptional. Everything fit together nicely, not a single problem except for the screw that holds the capacitance hat radials was about a fraction too long so I had to grind it down so that it would tighten and hold the radials securely. I am very pleased with the quality and the performance on 10 meters. After reading other reviews, I don't understand how anyone could not possibly consider this a high quality antenna. Nice job HyGain!Published on January 18, 2019 by Jon.
Sigma 5/8 Cb Base Antenna
I have had a few Penetrator 500 antennas over the years and this one has been the worst as far as quality of manufacture.None, absolutely none of the vertical or horizontal elements will securely mount to the next one it connects to. It seems that all of the swaged down joints were done incorrectly. None of the clamps will close the splits and secure the next element.Sloppily done. Update.I contacted Hy-Gain (MFJ) and submited a 'problem ticket'.Customer Service has offered to supply me with new replacement vertical and horizontal tubing elements.I will see how all fits when I receive them.Published on February 13, 2018 by STEVE.
Choosing a base station antenna isn't easy. You havemultiple styles to choose from (beam, omni-directional, wire) andmaterials (fiberglass, aluminum) as well as mounting possibilities (mast,tower, tripod, roof). Generally speaking the most popular base antennas inthe CB world are the vertical omni-directional antennas. They rank # 1because they are easy to install, they don't usually take up as much roomas larger beam (yagi) style antennas, and they are inexpensive.Theis anomni-directional vertical groundplane antenna made of aircraft alloy 6063-T5 aluminum tubing with.050'wall thickness. The antennas are manufactured here in the USA. The ground planestyle of vertical antennas utilize radials that extend out from the baseof the assembly to help lower the angle of radiation. These types ofantennas have proven very effective for talking both locally and longdistances.There is a large amount of discussion online aboutthe benefits of ground plane radials versus antennas that don't use them,such as the Solarcon Imax 2000 or use other configurations like the SirioVector 4000.
These comparisons are quite subjective and involve a lot ofantenna theory so for this review we've decided to focus on the install,tuning, specifications, and general performance of this antenna withoutgetting involved in the heated debate over which antenna is best.THE BOXThe Maco V 5/8 antenna will come packaged in a 74.5”long cardboard box along with some packing peanuts. The antenna iscompletely disassembled when you receive it so be prepared to set asidesome time for assembly and tuning.As you can see in the pictures the antenna consistsof multiple sections of aluminum tubing of various diameters that slideinto each other and are held in place with the included hardware.You’ll also notice two “C” shaped pieces which whenassembled will become a special tuning ring section at the base of theantenna. The new base antenna owner may be a little intimidatedby all the parts and having to assemble the antenna themselves, butthere’s no need for concern as the parts go together very simply and mostof the process is very straightforward.ASSEMBLYSome of the tubing pieces for the Maco V 5/8 havespecial slits cut into the ends.
For assembly you slide the smaller piecesof tubing into these pieces and use your hardware connector pieces totighten around the slitted sections. As you tighten the connector pieces(ring, with screw, nut) they compress the slitted sections of the tubingand tighten down, completing the connection between the two pieces ofaluminum.Some of the sections use hose clamps to secure twopieces of tubing together and these are used mostly in the verticalsections.Once you’ve completed sliding most of your tubingpieces together you’re ready to tackle the ring system. The two “C” piecesare attached together with screws at two locations on the antenna tocreate a slight corkscrew effect.As you can see from the picture the top part of thering is attached to a metal bar that angles down at about a 45 degreeangle and is attached to the antenna with a clamp.
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The bottom sectionscrews onto the coax connector bracket, which is an L shaped piece of metalthat is bolted directly to the antenna. Installing this part of theantenna is probably the most difficult part as it require more specificmeasurement and adjustment. These pieces are smaller and so use care notto bend or break the aluminum.The final step in this assembly is attaching the wirefrom the center of the coax connector to the ring using a small P clamp.The ground plane radials for this antenna areattached to a ring that has four protrusions which they slide on to. Thisring is connected to the main base section of the antenna with a bolt.Once your antenna is assembled it can be mounteddirectly onto your mast section. The mast will slide into the bottomtubing of the antenna and is secured with a metal ring/bolt.Fully assembled, the antenna and setup for 27 MHZ theantenna should be 248' (20.5 feet) in height.
You will need a good largesection of space when assembling to ensure you don’t accidentally bend anyof the radials or damage the antenna.INSTALL AND TUNINGNow that the antenna is assembled you’ll need to tunethe antenna for the best SWR for the frequencies you intend to talk on(the antenna can be setup for 10 meters, butwe’ll focus on 11 meter tuning here). For tuning, the antenna ideallyshould be at its operating height but for most people it’s not reasonableto try to tune an antenna or make changes while it mounted 40 feet in theair on your tower or mast, so you’ll want to do most of the tuning beforeinstallation.Thisposes a bit of a problem as you need to get the antenna in the airsomewhat otherwise your tuning readings won’t be accurate. To overcomethis issue I usually pull out two pieces of fence tubing I keeparound. Both sections are 6 feet long and they are top rails that fittogether. I have another piece of 6 foot plumbing pipe that I’ve poundedinto the ground about 3’ and I slide the 6’ top rail fence tubing overthis.
I then attach the antenna to the other 6 foot section and connectthe two sections together. The end result is a 12 foot mast which is highenough for testing/tuning and if I need to make changes I can easily dropthe top section down and adjust the antenna and then put it back up again.Adjusting the SWR on this antenna can be accomplishedin two ways. You can adjust the physical length of the antenna by slidingthe tubing that goes into the bottom section up or down. The othermethod is to adjust the location where the center conductor wire attachesto the ring. For my antenna I found that I only needed minor adjustments for SWR and the most noticeable changes in tuning were done by changing thelocation of the conductor wire on the ring.After about 1 hour of assembly and 10 minutes oftuning I had finished up with SWR readings of 1.3 on channel 1, 1.1 onchannel 20 and 1.15 on channel 40 (these readings are at the 12’ heightprior to install). I did notice that this particular antenna onceassembled and tuned for 11 meters isn't super broad banded, so if you setthe length for 11 meters and plan to talk on 10 meters an antenna tunermight be recommended.I did one last check and tightened all my fittings,connected my Davis RF Bury Flex coax and mounted the antenna on sometemporary masting in the back yard. Height to the bottom of the antennawas around 30’ and with the 20' length of the antenna the tip was around50'.PERFORMANCEI installed the antenna over the weekend, but Ididn’t have any DX to listen to and I couldn’t raise the locals so all wehad for the first two days to listen to was static.
This actuallypresented an interesting scenario as many people have made comments onforums that after installing an aluminum antenna and comparing it to aprevious fiberglass antenna that the Maco’s tend to have a lower noiselevel.I have my other two antennas (Imax 2000 and homemade¼ ground plane) on an antenna switch so I added the Maco V 5/8 to thethree way switch to compare the static noise. For the most part all threeantennas were very similar in terms of static noise, but I did find that on certain channels where I had ahigher static level due to electrical hum in the background that the Macodidn’t seem to hear this electrical noise as much as the other twoantennas, making it quieter on those channels.I suspect that because I live in a farming communitywith very little electrical noise and basically no above ground powerlines that I won’t see as much of a difference as someone who livesin a larger city with more electrical interference. Based on my simpletest and the many comments I’ve seen online I would tend to believe theclaims that this antenna may offer a small reduction in electrical noiseover fiberglass antennas like the A99 or Imax 2000 in places where that type of noise is more prevalent.Later in the week I was able to talk to my local test stationin the area and did some AM and SSB tests. The Maco V 5/8 performed verywell putting a 3-5 S unit signal on SSB to the station 35 miles away. Thetransmitted signal was strong enough that the receiving station was evenable to hear me when he switched from his vertical antenna to his beamantenna. He told me that usually when stations in my town try to talk tohim using a vertical and he is on the beam he can’t hear them at all, sohe was impressed with the performance of the antenna.Next I got a chance to talk some DX with the Maco V5/8, and while DX conditions aren’t the best measure of an antenna sincethe level of skip can vary from day to day, I was able to see how well Iwas able to make contacts in different areas of the country and how wellmy station was able to compete with all the other stations trying to makecontacts.The results were excellent.
Sigma Venom 5/8 Wave Cb Base Station Antenna
One minute I was able tocontact Tennessee and South Carolina, the next I made a contact into SouthDakota and minutes later I was talking into California. I had no problemsgetting stations to respond and I had many reports that my station signal was strong.For receive comparisons I decided to test the Imax2000 and Maco V 5/8 and see if there was any discernable difference insignal strength on receive. I did some tests for local stations and DXstations and after days of testing I came to the conclusion that at thesame heights, using the same coax, testing with the same stations, theMaco regularly had a 0.25 S unit higher receive reading than the Imax2000. Now since every antenna install is different and so many factors areat play this result could differ for someone else doing the same test, butI think generally speaking most people will find the Maco will veryslightly outperform the Imax 2000 for receive by around ¼ S unit.While there is no standard for S units the generallyaccepted principle is that an S unit is equal to around 6db. Which would give the Macoa 1.5 db gain advantage over the Imax 2000 for receive in my testing.Beyond the on-air performance I found the physicalconstruction of the antenna impressive and almost immediately afterinstalling it we experienced 50 mph gusts during a storm. The antennahandled the wind without difficulty and it seemed like the construction of the antenna would beadequate to survive most storms people will encounter.The one weak point in the antenna might be the ringtuning section. While it is built out of aluminum and handled the windwithout any problems, a stray falling branch or limb could damage thethinner pieces of the ring section much easier than other parts of theantenna.
While the chances of this happening are probably very slim, it’sjust something to note.SUMMARYThe Maco V 5/8 Ground Plane antenna is a well builtaluminum antenna that offers very good performance characteristics. Cobra Uniden Antenna Amplifiers Microphones Cb radioreviews modificationsCobra Uniden Antenna Amplifiers Microphones Cb radioreviews modificationsThis website is purely for entertainment purposes. Any and all articles, reviews, products, pictures, writingsor any other material published on this website are written and areto be used for entertainment purposely only. All materials on this website arewritten and posted purely to entertain the reader/website visitor. All opinions,articles and written statements on this website are opinion. Anyone visitingand viewing the material on this website agrees that the content on this websiteis to be used for entertainment purposesonly. This website does not condone or take part in illegal activitesand can not be held responsible for any illegal acts committed by anyoneincluding visitors or any other persons who may read or see or hear about anycontent from this website. Since this websites content is purely forentertainment andis purely for entertainment purposes we refer anyone seeking informationregarding any electronic devices governed by the FCC including CB radios tovisit the website of the Federal Communications Commission. For factual information regarding Citizens Band radio rules andoperation please visit the FCC website at.The FCC is a government factual source for legal rules and information on how tobuy, use, and operate a CB radio.