Copper Talk » Product Reviews » Amplifiers » KLV 550 « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Nickel
Junior Member
Username: Nickel

Post Number: 11
Registered: 7-2004
Posted on Thursday, August 05, 2004 - 8:11 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Can the 3 amp power sup. in th 550 run a 2950 (turned down) 2.5 watts DK and 18 swing.
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech548
Moderator
Username: Tech548

Post Number: 201
Registered: 5-2004
Posted on Friday, August 06, 2004 - 12:22 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Nickel

Put simply, NO!

It's never wise to run a amplifier and radio on the same power supply. Besides, 3 amps will barely (if at all) support 18-20 watts.

Jeff
Tech548
Top of pagePrevious messageNext messageBottom of page Link to this message

Highlander
Advanced Member
Username: Highlander

Post Number: 564
Registered: 12-2001
Posted on Saturday, August 07, 2004 - 2:32 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I am running my Grant LT on my KLV-550 P/S, with good results. Radio only deadkeys 1.5 and modulates to around 7 watts, so it doesn't pull too hard. Before that I ran a Roadpro Titan II (single final clone of Magnum 257) on it with no problem. The Amplifier section of the 550 works really well with single final radios, I've had some trouble using dual final or higher powered radios on it. It is a VERY low drive amp with the 1407's in it. The older MRF 422 ones could take a little more drive than the new ones can.
Top of pagePrevious messageNext messageBottom of page Link to this message

Crackerjack
Intermediate Member
Username: Crackerjack

Post Number: 219
Registered: 7-2004
Posted on Sunday, August 08, 2004 - 4:09 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

How would you run a dual final radio on s KLV-350? I have a Magnum 257.
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech808
Moderator
Username: Tech808

Post Number: 3245
Registered: 8-2002


Posted on Sunday, August 08, 2004 - 7:23 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Crackerjack,

Turn your Dead Key / Input Power down to about 2 to 2-1/2 Watts and you would be set to start talking.

Amplifiers cannot tell if your radio is a Single or a Dual Final Radio.

The only thing they see / recognize is the Input Drive Power.

Lon
Tech808
Top of pagePrevious messageNext messageBottom of page Link to this message

Cbblackbeard
Member
Username: Cbblackbeard

Post Number: 77
Registered: 12-2003
Posted on Sunday, August 08, 2004 - 11:08 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Lon,

On my JB-76B there is what looks like a set screw to adjust the input power. There is also a scale on the front of the amp and it says
"set to line".

If I set the input to the line, could I see a drop in wattage on the meter that is on my
696F-SSB?

For example: my 696 dead keys 5 watts. After I set the input to the specified line, it drops to 2.5 watts

Is this normal?
Top of pagePrevious messageNext messageBottom of page Link to this message

Jessejames
New member
Username: Jessejames

Post Number: 2
Registered: 2-2004
Posted on Monday, August 09, 2004 - 2:02 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

cbblackbeard: I have the KLV 550. Dead key Input is 2.5W, with amp showing 125 watts output. I was told that you do not want to push the amp to much and that the above settings were what they should be. What kind of amp do you have now, the one with the line to show the setting?
Top of pagePrevious messageNext messageBottom of page Link to this message

Brewdirect
Junior Member
Username: Brewdirect

Post Number: 19
Registered: 7-2004


Posted on Tuesday, August 10, 2004 - 12:35 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

You could even drop your deadkey a little lower if you wanted...your#'s sounds about right for what your input is. What does your radio swing to and what does the amp show with that swing?

Best to have a low deadkey with lots of swing caused by the modulation(your voice). Will make your amp last longer.

I run my current KL with a 1 1/2 watt deadkey and swing to 10 watts on the input.
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech548
Moderator
Username: Tech548

Post Number: 216
Registered: 5-2004
Posted on Tuesday, August 10, 2004 - 10:27 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Brewdirect

The way you have your radio set up for driving a linear couldn't be better. Your amplifier will more than likely run cooler and outlive many others since they insist on running a heavier RF input.

Good setup. You obviously know what you're doing and the reason why it's done that way.

Jeff
Tech548

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: