| Author |
Message |
    
Freebird
Intermediate Member
Username: Freebird
Post Number: 454
Registered: 1-2003
| | Posted on Thursday, July 13, 2006 - 5:15 pm: | 
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Im thinking of buying the klv 550 base amp.Can anyone tell me how many watts this amp really does on Sideband and AM?...And if you have this amp how do you like it?and how long have you had it and how much do you use it?thanks in a advance ~freebird~ |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 1754
Registered: 7-2004
| | Posted on Thursday, July 13, 2006 - 10:01 pm: |
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KLV550
by Tech671
Specifications
GENERAL
Power output meter
On Air meter
110v AC
(2)SD1407 Power transistors
Frequency Range 26-30 Mhz
26 db Gain Preamp
Built in 3 amp 13.5 volt Power Supply
On/Off Switch
AM/SSB Switch
Preamp On/Off Switch
Standby Switch
Mode AM/FM/SSB/CW
Fuse 4A
Review
The KLV550 was tested with a Galaxy 949 and the 949's output was a modest 16w peak.
For any of you interested I spent a little time with the KLV 550. I was impressed with the output of the pair of Thompson SD1407 28v transistors. These are rated at 100w avg power with 2.5w of avg drive ea. It should easily achieve 200+ from a Bird 43 and 400-600 on the Bird 43p depending on peak drive.
Output Levels using 6 Position Switch
Position Input Deadkey PEP
1 2.5w 20w 100w
2 2.5w 30w 150w
3 2.5w 40w 200w
4 2.5w 50w 250w
5 2.5w 70w 325w
6 2.5w 110w 425w
Of course with a radio of higher peaks your peak output will increase. The neat thing is the built in power meter is pretty accurate. Audio checks were "loud and clear". SSB worked just as well as AM with "loud and clear" checks as well, ssb delay was just right.
The pre-amp works very well and the adjustability is a dream. You know sometimes you need just a little more gain, not to be blasted away by the pre-amp. This allows you to do just that. Adjust just the amount of pre-amp gain you need to hear what you're after without dragging in all the trash with it.
The two cooling fans are on the bottom so make sure the amp sits in a cool place and a hard surface. Periodically check and clean the fan grilles.
All in all another great product from RM Italy available to you from Copper Electronics. Enjoy!
-Tech671 |
Freebird
Intermediate Member
Username: Freebird
Post Number: 455
Registered: 1-2003
| | Posted on Friday, July 14, 2006 - 12:26 am: |
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Not bad but I wonder if those readings are from sideband or AM? |
Chad
Advanced Member
Username: Chad
Post Number: 989
Registered: 11-2004
| | Posted on Friday, July 14, 2006 - 8:55 am: |
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Beings that they said Dead-Key I would imagine standard AM 
Chad |
Freebird
Intermediate Member
Username: Freebird
Post Number: 456
Registered: 1-2003
| | Posted on Saturday, July 15, 2006 - 7:55 pm: |
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yeah so on sideband it must be more cause sideband does more power. |
Alsworld
Senior Member
Username: Alsworld
Post Number: 1007
Registered: 1-2002
| | Posted on Saturday, July 15, 2006 - 11:35 pm: |
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Freebird,
it really depends on how your radio will drive the amp. I have seen about the same on AM as SSB, about 450 watts PEP. Yes, that is strange, and usually I would expect more on SSB. But, it depends on the radio drive.
Don't expect the advertised 600 watts. Don't expect the max watts on anything KLV advertises. They make great products, but are quite optimistic in the advertising department. But...they do sound sweet on the airwaves!
Alsworld |
Freebird
Intermediate Member
Username: Freebird
Post Number: 460
Registered: 1-2003
| | Posted on Wednesday, July 26, 2006 - 11:08 pm: |
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That is kinda strange.how many watts are you driving it with?I think it says you can only drive 2 watts into it?.How many months or years have you had this amp and have you ever had the fuse blow in the amp at all?thanks
~freebird~ |
