| Author |
Message |
    
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 126
Registered: 3-2005
| | Posted on Wednesday, December 28, 2005 - 11:54 pm: | 
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Hello i'd like to know what amp in the 250 range
will do me real well on SSB moble it's a small
car guys so give ne a hint. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2137
Registered: 7-2004
| | Posted on Thursday, December 29, 2005 - 5:15 pm: |
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texas star dx 350-2 2sc2879 transistors will give you a nice 250 watts PEP  |
Vanillagorilla
Intermediate Member
Username: Vanillagorilla
Post Number: 406
Registered: 4-2005
| | Posted on Saturday, December 31, 2005 - 2:10 pm: |
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Pat more than likely suggested the higher quality kicker but if price and size matters to you...a couple locals around here love their KL / RM Italy kickers. They get velcro treatment to the top of the radio and have a very thin profile.
The TS as Pat suggested would probably be the stouter amp if you could find the room for it.
I rememder Tech808 liking his KL500 which should put you well in your range for SSB. Maybe he'll jump in here. |
Hotwire
Advanced Member
Username: Hotwire
Post Number: 775
Registered: 1-2005
| | Posted on Saturday, December 31, 2005 - 4:54 pm: |
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One thing to consider is what type of radio you plan to use before buying an amp. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2154
Registered: 7-2004
| | Posted on Saturday, December 31, 2005 - 7:12 pm: |
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ok, texas star dx350 OR dx350hdv |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 129
Registered: 3-2005
| | Posted on Monday, January 02, 2006 - 8:46 pm: |
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Well i ordered a KL300P hear they are good for
125 to 150 AM and maybe 200 ssb that do the trick
it's a little car with a little alt. But i got
this little problem i found out sat. i have like
2.4 ohms from the bat/gnd to eng/block thats no
good. looked it over found one wire coming off
the head as a gnd will wait fore a dry day and
look under at block to frame bet its not got one
also feel i need to put one from frame to firewall as i know the bat/gnd is to firewall.
O the head one is not going to the firewall? |
Navyrebel782003
Member
Username: Navyrebel782003
Post Number: 73
Registered: 12-2004
| | Posted on Monday, January 02, 2006 - 8:57 pm: |
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actually Al lafon, 2.4 ohms is not that bad, I deal with stuff on f-18's everyday and that's actually a good reading, on our meters the leads themselves have almost 1 ohm there, so I think you will be just fine with that for the KL-300p, I have one in my colorado on my 257 and so far love it. |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 130
Registered: 3-2005
| | Posted on Monday, January 02, 2006 - 8:57 pm: |
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O my good old GE 3-5825B AM/SSB full 1/4 wave on
rear deck wife hates that thing she seems to stand right in the path it takes when she slams
the trunk think she'll learn not to slam it! |
Wildrat
Advanced Member
Username: Wildrat
Post Number: 580
Registered: 12-2003
| | Posted on Monday, January 02, 2006 - 9:14 pm: |
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You need to ground it all. When I did my Jeep as well as myother vehicles I added lots of gounds. Multiple grounds. You will need to ground the equipment also. If your going to do it, do it right.
Wildrat
CEF674
EGCCC |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 131
Registered: 3-2005
| | Posted on Monday, January 02, 2006 - 9:47 pm: |
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O anyone ever try to rotate the front on the KL
as i'd like to mount it upside down under the
dash also plan to put two computer fans on the
heatsink for cooling |
Chad
Advanced Member
Username: Chad
Post Number: 621
Registered: 11-2004
| | Posted on Monday, January 02, 2006 - 11:03 pm: |
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It would be tough as the switches are mounted directly to the board to the hatsink to the front panel 
But nothing is impossible.
I run mine on low power all the time, it just decreases sensitivity and the amp can still reach full output. It works very well for me this way as for others I believe.
Chad |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 978
Registered: 9-2004
| | Posted on Tuesday, January 03, 2006 - 1:02 am: |
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chad, lets get your input on this.
as you know, depending on how the transistors are mounted, running an amp upside down can ruin it quick.
will you take a look inside your KL300P and tell me if you think it would be better or worse to run this amp upside down.
i know what i think, i want to know what you think.
al, better to relabel the front panel on this unit.
i thought about doing the same thing to mine, but its pretty involved.
matt |
Chad
Advanced Member
Username: Chad
Post Number: 622
Registered: 11-2004
| | Posted on Tuesday, January 03, 2006 - 9:39 am: |
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It's not the position of the transistor as much as that of the heatsink. If it is mounted upside down passive cooling is greatly hindered and should be fan cooled. Mine has never really became that hot, but I run it sensibly. I would think a single small fan over the transistor mounting area (can see the screws from the top) would work fine if the amp is inverted.
Sooooo, a short answer the transistors are already (upside down) but the sink is in the correct position
Chad |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 132
Registered: 3-2005
| | Posted on Tuesday, January 03, 2006 - 9:40 am: |
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Think a custom bracket is in the works to keep things upright thankgod i have friends in sheetmetal dept. at work. anyone looking for
fans by the way see http://www.frozencpu.com/
they have all kinds of them some have leds mounted on them too if you are in to that kind of thing. |
Black_hawk
Junior Member
Username: Black_hawk
Post Number: 10
Registered: 2-2005
| | Posted on Tuesday, January 03, 2006 - 5:43 pm: |
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I bought the kl 400 mobile from copper.It doesn't hit the 250 your looking for but the amp works really good. |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 135
Registered: 3-2005
| | Posted on Wednesday, January 04, 2006 - 10:34 am: |
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The numbers they have are over stated unless you
push them hard but 150 to 200 in a car on SSB
works for me. Big power is for Basestations and
the rare contacts.
73's al |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 138
Registered: 3-2005
| | Posted on Thursday, January 05, 2006 - 10:06 am: |
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It's in i didn't know the preamp is wired to be
on with the amp will need to take a close look
at the schematic maybe i'll use the AM/SSB switich to bypass the preamp hardwire it for
SSB. Maybe i'll look at running preamp at a
lower gain also. |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 989
Registered: 9-2004
| | Posted on Friday, January 06, 2006 - 12:27 am: |
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al, do a search on this forum for "kl300p".
there is a guy named INSPECTOR, that figured out how to disable the preamp. it only involves cutting one transistor leg.
i didnt like having the preamp on and lowering the RF gain because the preamp adds some noise to the system.
i disabled mine and have never regretted it.
chad, so im not the only one that went "huh?" when i saw the way this amp was designed.
its like its meant to be mounted on its side!LOL
matt |
Chad
Advanced Member
Username: Chad
Post Number: 631
Registered: 11-2004
| | Posted on Friday, January 06, 2006 - 9:31 am: |
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Al,
I cut my preamp transistor, I never used it, don't like it, it's gone. Great little amp for the money. Getting ready to mod mine for class AB, anyone done this?
Chad |
Al_lafon
Intermediate Member
Username: Al_lafon
Post Number: 141
Registered: 3-2005
| | Posted on Friday, January 06, 2006 - 10:46 pm: |
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Ok what about using a 2SC2999 in place of the BF 199 ? |
