Base W-I-D-E Banded 2008

[Greg T]

I made a quick, impromptu video of my wide-banded system tonight. No, it's not a faulty meter. I've tried this with about 4 good meters and even with the internal radio meter. I don't know why this turned out the way it did, but I'm not complaining. If I were to go all the way to 1.5:1 I could probably use nearly the entire radio's frequency capabilities. The power cables and coax look a mess, but rest assured I am extremely fussy about quality soldering, etc. Take a look at the vid and let me know what you think.

 

[Shadetree Mechanic]

That's great if you plan on using all that bandwidth; it's perfect.

If all you want is to run 10/11 meters, then forward gain can be improved.

 

[Greg T]

That's great if you plan on using all that bandwidth; it's perfect.

If all you want is to run 10/11 meters, then forward gain can be improved.

I usually run channel 14 and up. Last night the noise was bad so my Saturday night chat was held on 27.575 all night. A guy from Boston broke in and said he'd been listening for over an hour. Once in a while I bump up to 27.705 and that's about as high as I go. It's extremely convenient that I don't need a tuner or have to worry about match.

 

[M0GVZ]

Hmmm....not convinced there's nothing wrong. It's supposed to have a bandwidth below 2:1 of 1750kHz. Usually when you see a low SWR over that much bandwidth it's because of loss somewhere. My Imax 2000 is supposed to have a bandwidth below 2:1 of 2MHz and that what it has on the end of 100ft of Ultraflex 10 coax with RF chokes at either end and the Imax ground plane kit. If I go up 10kHz from the low end or down 10kHz from the high end of that 2MHz bandwidth the SWR falls.

 

[Greg T]

Hmmm....not convinced there's nothing wrong. It's supposed to have a bandwidth below 2:1 of 1750kHz. Usually when you see a low SWR over that much bandwidth it's because of loss somewhere. My Imax 2000 is supposed to have a bandwidth below 2:1 of 2MHz and that what it has on the end of 100ft of Ultraflex 10 coax with RF chokes at either end and the Imax ground plane kit. If I go up 10kHz from the low end or down 10kHz from the high end of that 2MHz bandwidth the SWR falls.

I don't know where the loss would be. This thing talks. Had the same performance from my Yaesu with this setup. I was thinking MAYBE the meter is reading the SWR between the amp and the LP filter instead of the antenna. But, if that's the case, I don't care as long as the amp and radio are safe.

 

[Rwb]

I don't know where the loss would be. This thing talks. Had the same performance from my Yaesu with this setup. I was thinking MAYBE the meter is reading the SWR between the amp and the LP filter instead of the antenna. But, if that's the case, I don't care as long as the amp and radio are safe.

mine is very wide also.
i tuned my a 99 as close as possible to the 2008. i used antenna switch . the recieve and transmit is waaay better on the 2008.
the a 99 is good for 1 band n part of the above and below bands but the sirio goes much farther. ive made some decent distant contacs on the 2008,switched to the a99 n i wasnt heard. i dont belive i got any loss or id not talk where i am on the 2008 cause the a 99 just wont do it.
as far as the a 99 its ok and if it was slim pickings id buy another a 99,but id rather own another 2008

 

[hotrod]

i got a sirio 2016 and it covers quite a bit aswell