Is it common to have a CB antenna work well between 26.000.0 to 29.4900.0

[hammer0630]

I have just bought a President HR 2510 with the eleven meter frequencies mod already done and I am using a Star Duster antenna and from the lowest frequency to the highest my swr's are 1.0 to almost 1.1 and my RF stays about the same also. I don't know anything about Ham radio but their is a class this Saturday for $25.00 I am going to apply for. I am getting a little tired of the drunken CBer's we have around here and have met some very respectable people on the higher channels. I am no saint by any means but like anyone else being disrespected makes me want to get in the truck and see what they would say to me in person! It seems their are not to many people in 10 meter band in my area and they are glad to have us aboard.

 

[Mudfoot]

The Star Duster would need an antenna coupler to operate that range.

Might try a Sirio Gainmaster.

If you already have the Star Duster and are getting that kind of bandwidth, then something is funky. How high is your antenna? Or your meter is flaky. I'd cease transmitting until you figure it out.

 

[hammer0630]

I checked again after reading your post and I stand corrected on channel 26.000.0 I have a swr of 1.4 and as I go up they get down to 1.0 on the cb band and all the way up tp 29.999.0 Oh, my antenna is about 60 feet to the base of the antenna and 24 feet above the roof top to the base of the antenna.

 

[Mudfoot]

 

[camaro1]

is your coax new or old,, I have heard of old bad coax doing something like that, or your meter is bad

 

[Singularity35]

I heard from a a technical guy that bad coax will give a good reading through a range of frequencies that is unrealistically broad.

 

[hammer0630]

My coax is new and it is Times Microwave LMR-400. I set my am wattage at a watt and a half and checked my RF output about Eight different spots on the band from low to high and I got a reading of just under two watts to one watt readings. I noticed tonight talking with several people and they all came in as when we where on the regular forty channels but one came in with a lower signal and it just so happens he has very little knowledge about radio's and has his antenna leaning against the house barely clearing the eve's of the roof.

 

[M0GVZ]

I don't know anything about Ham radio but their is a class this Saturday for $25.00 I am going to apply for.

I'll just give you a little incentive to get your ham ticket...

This is a video of a President Lincoln I'm just realigning. The President Lincoln is the same radio as your HR2510. The QSO is in the Technician portion of the 10m band for SSB and the antenna is a hexbeam at 33ft which has a couple of dB less gain than a simple Moxon or a Sirio 3 ele beam on 10m. I'm using the stock radio with the stock mike and stock output power. The distance is 4155 miles and he has a fair old pile up on the go.

Working AU3NIAR on President Lincoln, 4155 miles. - YouTube

 

[vkrules]

My coax is new and it is Times Microwave LMR-400. I set my am wattage at a watt and a half and checked my RF output about Eight different spots on the band from low to high and I got a reading of just under two watts to one watt readings. I noticed tonight talking with several people and they all came in as when we where on the regular forty channels but one came in with a lower signal and it just so happens he has very little knowledge about radio's and has his antenna leaning against the house barely clearing the eve's of the roof.

Something wrong with the swr on that ant.Are you resetting the meter when you take the readings QUOTE"I set my am wattage at a watt and a half and checked my RF output about Eight different spots on the band from low to high and I got a reading of just under two watts to one watt readings."UNQUOTE

 

[hammer0630]

That's exactly what I did with the same readings as you.

 

[W5LZ]

" Is it common to have a CB antenna work well between 26.000.0 to 29.4900.0"
No it isn't. The key work in that question is 'well'. You can certainly make one antenna -work- betweren those two frequencies, but it will not work -well-. And then that depends on how you define 'well' and how you measure it. Lot's of 'lee-way' in that, meaning if you are only going by SWR then you are using a characteristic that just isn't very definitive for defining 'well'. SWR can't tell you anything about how 'well' an antenna is working, only how well it's impedance match is, which is also a way of measuring the transference of power. It can't tell you anything about how the antenna deploys that power, what it does with it, where it goes. A 50 ohm resistor has a fantastically nice SWR. But it's a terrible antenna.
- 'Doc

 

[AL567]

For example, a sirio 5000 that shows great swr's in this same range isn't as great as we are led to believe when looking at an swr meter?

 

[M0GVZ]

For example, a sirio 5000 that shows great swr's in this same range isn't as great as we are led to believe when looking at an swr meter?

But it doesn't show "great SWRs"(whatever that means) in the same range or anything approaching it. The Sirio is at best 2Mhz and that is 2:1 and below. Hammer0630 is getting 1.1:1 or less over 3MHz and less than 1.4:1 over more than 4MHz.

The only way to do that is with a lot of loss.

 

[vkrules]

I was quoting you. It was 2 am in the morning and I wasn't clear. Like it has been said the only way to get those results with that ant is if you have a lot of loss. Check your connections and cable and test the ant swr at the feedpoint if you can.Have you got another swr meter to compare reading?

 

[Shockwave]

Remember this is an unloaded 1/4 wave groundplane with no matching network required. It will have a wider bandwidth than a typical end fed 1/2 wave or 5/8 wave. The manufacturers SWR sweep shows close to the same SWR he is seeing over a 2.5 MHz. bandwidth. Add some coax loss, a meter that may be reading slightly to the low side and what he's seeing is not so impossible.