| Author |
Message |
    
Airplane1
Junior Member
Username: Airplane1
Post Number: 45
Registered: 5-2004
| | Posted on Wednesday, June 23, 2004 - 8:28 am: | 
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Hi,
I see amps that say what frequency the are for and understand the 26-46 or something but what does it mean when the amp frequency is HF?
Please help me uderstand this.
airplane1 |
Hootyal
Intermediate Member
Username: Hootyal
Post Number: 124
Registered: 9-2002
| | Posted on Wednesday, June 23, 2004 - 5:20 pm: |
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HF is short for High Frequency..0 mhz through 54 mhz. Someone will correct me if I'm wrong. |
Spider24112
New member
Username: Spider24112
Post Number: 6
Registered: 5-2004
| | Posted on Wednesday, June 23, 2004 - 7:06 pm: |
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It means the amplifier will work on those frequencys . Example if you see an amp and it says it will operate between 26-30 Mhz then this amplifier will work both 11 meters which is CB and 10 meters which is 28 MHZ which is HAM . These fall in the HF frequencys. HF frequencies are 160 meters 1.8MHz through 10 meters 28 MHz. VHF frequenices in HAM start at 50 MHz or 6 meters through 144 MHz or 2 Meters and 1.25 Meters which is 222MHz. UHF 70cm which is 440MHz . the list of frequencies goes on into the microwaves also. But this is something to think about HF antenna are longer in size compare to VHF and UHF antennas . |
Airplane1
Junior Member
Username: Airplane1
Post Number: 47
Registered: 5-2004
| | Posted on Wednesday, June 23, 2004 - 9:22 pm: |
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So, If an amp says HF I can use it for 11 meters which is 40ch CB correct?
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Dindin
Intermediate Member
Username: Dindin
Post Number: 208
Registered: 2-2004
| | Posted on Wednesday, June 23, 2004 - 9:37 pm: |
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here is a better breakdown of the frequency spectrum
http://www.jneuhaus.com/fccindex/spectrum.html |
Tech808
Moderator
Username: Tech808
Post Number: 2748
Registered: 8-2002
| | Posted on Wednesday, June 23, 2004 - 10:01 pm: |
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Airplane1,
There many HF Amplifiers out there for many different bands.
To use one on 11 Meters(CB) it needs to be a 10 Meter Amplifier or and Amplifier that is capable of operating on 10 Meters and opened or converted for use on 11 Meters (CB) band.
All of the Amplifiers from Copper are ready to go right out of the box. Plug & Play!
Hope this helps.
Lon
Tech808 |
Airplane1
Junior Member
Username: Airplane1
Post Number: 48
Registered: 5-2004
| | Posted on Thursday, June 24, 2004 - 9:06 am: |
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Thanks everyone,
Now I understand, I just need to make up my mind on an amp. I was going to get the KLV 400 base amp but it does`nt have a pre amp,I also was thinking of the KL 400 or KL 500 mobile amp but cant decide.
I thought I seen a post that said you need a preamp to talk DX,I was looking for that post again but cant find it, Is it true I would need a preamp for DX?
If not I think I`ll get the KLV 400 base unless most of the members of or techs on this post who read this think the KL mobile amps I mentioned earlyer would be better. I trust the experience of the members and techs.
Thanks again, airplane1 |
Highlander
Advanced Member
Username: Highlander
Post Number: 537
Registered: 12-2001
| | Posted on Thursday, June 24, 2004 - 11:56 am: |
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In my opinion, you don't need a preamp. I have a couple of them here, and I never use them. I find that you can pretty much achieve the same results by turning up the volume! Seriously, those things are so broadbanded, they amplify everything, including the noise floor.
I think you should get the klv-400 base if you are using it on a base station, try it for awile, then see if you can borrow a preamp from someone and see what they do. Copper I believe has several receive pre-amps available for purchase should you want one. |
Dindin
Intermediate Member
Username: Dindin
Post Number: 214
Registered: 2-2004
| | Posted on Thursday, June 24, 2004 - 8:36 pm: |
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Airplane1,I wouldnt place much stock in a preamp.If someones signal is at the noise threshold you will bring up the noise also and they would still be in the noise.go with the klv-400. |
