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Message |
    
Stepchild
Intermediate Member
Username: Stepchild
Post Number: 174
Registered: 11-2002
| | Posted on Saturday, December 20, 2008 - 11:57 pm: | 
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I'm looking at a Fatboy 900 (1-2879x4-2879)
Are these good amps for ssb? I know they are great for am but havent got much info on ssb. I'm going to have the ssb delay installed. The radio I'm going to use is a RCI 2950 old style. Also, How many watts should I drive it with am and ssb? And will a 102 ss whip handle it as well.
Stepchild
CEF-187
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Hotwire
Senior Member
Username: Hotwire
Post Number: 2700
Registered: 1-2005
| | Posted on Sunday, December 21, 2008 - 9:27 am: |
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With the ssb delay installed they should work as well as any other class C competition amp. With limiters intact and not over modulating the audio should be acceptable.
Fatboy is a heavy duty amp so the single 2879 should be able to handle the RCI. AM mode 1 or 2 watts deadkey and let it swing. The manufacture, I believe claims that this amp can do PEP of around a kilowatt or so. I would watch your watt meter and make input adjustments until you like what you see. Like a 200 to 300 watt deadkey and swing to a KW or some cber's prefer to have all swing and hardly any deadkey. Whatever you prefer..oh and a 102 inch whip with good grade coax would be the best choice.
Kenny
CEF491
Reading the mail around Indianapolis Indiana!
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Stepchild
Intermediate Member
Username: Stepchild
Post Number: 175
Registered: 11-2002
| | Posted on Sunday, December 21, 2008 - 11:08 pm: |
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Thanks Kenny, What about SSB? Do they have clear audio? I do most of my rag chewin on am but when the skip rolls in I'm no were near 19....qsl. I'm also lookin at the 400 coax at copper. Is it flexable or do I need to go with the 213? This will be a mobil setup.
Stepchild
CEF-187
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Stepchild
Intermediate Member
Username: Stepchild
Post Number: 178
Registered: 11-2002
| | Posted on Friday, December 26, 2008 - 6:38 pm: |
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Does anyone use a fatboy amp for ssb?
Stepchild
CEF-187
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Mrclean
Intermediate Member
Username: Mrclean
Post Number: 115
Registered: 12-2003
| | Posted on Saturday, December 27, 2008 - 11:28 am: |
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Go with a Magna Force if wanting for SSB also. Class B and Tough as Nails. Been running a Magna 350 in the truck for 5 years. |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2718
Registered: 1-2005
| | Posted on Friday, January 02, 2009 - 1:11 pm: |
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Sorry so long to reply Stepchild. As Mrclean posted the Magna Force amps are SSB ready. To use SSB you need a relay in the amp. SSB has no carrier so the relay allows the amp to run properly only activating when you talk. Some cheapy amps are auto SSB some are not. All the top dollar amps will have a SSB switch on them if ordered that way. When you order the Fatboy be sure to have the delay.
Kenny
CEF491
Reading the mail around Indianapolis Indiana!
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Hotwire
Senior Member
Username: Hotwire
Post Number: 2720
Registered: 1-2005
| | Posted on Saturday, January 03, 2009 - 1:08 pm: |
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Stepchild, OK that last post did'nt answer the question you asked.
I have never heard a Fatboy amp on air in the SSB mode so I can't say how it would sound. Probably not much different than the Magna Force amps which are for SSB.
Class AB-1 is the best amp for using sideband. If your heart is set on the Fatboy then get the relay installed and go by what the builder recommends to drive the amp with.
Be sure that the radio you use is setup properly, tuned, aligned and all that. Power mics, swing kits echos and gimmicks is a waste of time and your going to sound bad on air. For instance a radio from Copper tuned to run an amp with a good noise canceling mic is problem free and perfect. Remember that what goes into the amp is what comes out but worse and with near a KW on SSB it won't take much to sound like poo. Loud blasting audio is fine on AM but very unpleasant for SSB. Keep your radio in check and you'll be fine.
Kenny
CEF491
Reading the mail around Indianapolis Indiana!
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Golden_screw_driver
Intermediate Member
Username: Golden_screw_driver
Post Number: 117
Registered: 2-2008
| | Posted on Friday, May 08, 2009 - 2:46 pm: |
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just got to reading this. The FATBOY'S can be ab biased if you ask to get it done. With that said the only thing you need to watch is audio. Class C amps seem to enhance the audio to overwhelming amounts. The only CEF contact out of state for me was with my 10 pill fat boy to TECH 565 with SSB delay and AB biased and he said i sounded great!!!. i run my s-9 into it with TOP GUN off with 636l noise canciling mike. Like kenny said the main thing you will need is good meters in line to watch what you put in and get out(this is the only safe way to do it). i also switch to mod scale on meter when in ssb to make sure i do not pic up back ground nosie and disstort my audio. Also keep in mind they say 3-4 watts in dead key and allow it to swing i had to turn down to about 1 1/2 watts to keep it clean and i let it swing to around 2KW. Also keep in mind that even with a small 1x4 comp box it will need more juice than your commercial grade amps IE texas star and other's. Now i have a new fatboy 2x6x16 no ssb, no variable no high low am only box and i now use my tsdx1600v for ssb only. And yes my eyes boil and the hair falls out when keying up. As for antenna i use a 103c raised out of the bed of the pickup. You never said what the amp is going into my 2x8 would not run off the truck batt and i ended up istalling batt's in the bed of the truck(you can read the post in amp sec on the install and problems with the install. kind of a rant but it seem's not to many guys will admitt to running or using fatboy's or other custom's and everyone has there own choice and preferance..
421 GOLDEN SCREW DRIVER
CEF#0995
NORTH-EAST
CEF NET CONTROLLER
Channel 13 / 27.115 AM/LSB
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Stepchild
Intermediate Member
Username: Stepchild
Post Number: 189
Registered: 11-2002
| | Posted on Tuesday, May 12, 2009 - 11:05 pm: |
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Thanks Golden Screw Driver
I havent made up my mind yet on what to get but Ive got a few other things to do before I get that far. Its going in a 1990 chevy 1 ton dually, 6.2L diesel, 2-875 cca batteries but only a 66 amp alt that I'm swapping out to a 200 amp. Still got to do the grounds and bond all the doors, hood, bed...ect.
I got a new Magnum S-980 that i was gonna use but aint real sure yet. It's a great AM performer but not real sure about SSB. Thinking about a TNT strait 4 pill (2879's B biased) to use in my Freightliner and roll the mic gain back about halfway for SSB and kick it on AM. LOL.Thanks again
Stepchild
CEF-187
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Golden_screw_driver
Intermediate Member
Username: Golden_screw_driver
Post Number: 122
Registered: 2-2008
| | Posted on Wednesday, May 13, 2009 - 11:57 am: |
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Stepchild, Are you planning on running the straght 4 pill with the s-980, If so be sure to tell that to who ever you get the box from, most 4 pills will only take about 40-50 max into it. Be sure and ask question's to your amp builder/supplier to be sure. Although the smell of electronics burning is kind of addicting
421 GOLDEN SCREW DRIVER
CEF#0995
NORTH-EAST
CEF NET CONTROLLER
Channel 13 / 27.115 AM/LSB
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Stepchild
Intermediate Member
Username: Stepchild
Post Number: 192
Registered: 11-2002
| | Posted on Wednesday, May 13, 2009 - 6:41 pm: |
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Well GSD, I bought that S-980 so I could bypass buying a driver but what I'm getting into now is with a 4 pill I can let the radio loaf and still hit the amp pretty hard or with a 6 pill run the radio wide open and let the amp loaf. It's been a while since I checked the numbers but I will again just to be sure.
Stepchild
CEF-187
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