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Ajm1571
Junior Member
Username: Ajm1571
Post Number: 41
Registered: 12-2004
| | Posted on Wednesday, July 06, 2005 - 2:09 pm: | 
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What finals are in a Galaxy Saturn Turbo? Also, can bigger finals be put in without having to change anything like resistors or diodes? Any info would greatly be appreciated.
Thanks,
Allen
CEF565 |
Ajm1571
Junior Member
Username: Ajm1571
Post Number: 42
Registered: 12-2004
| | Posted on Saturday, July 09, 2005 - 12:43 am: |
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WOW!!! No one knows huh? |
Coyote
Intermediate Member
Username: Coyote
Post Number: 282
Registered: 11-2004
| | Posted on Saturday, July 09, 2005 - 8:33 am: |
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Oh... someone around here knows.... they just haven't seen this post yet.... |
Vanillagorilla
Member
Username: Vanillagorilla
Post Number: 83
Registered: 4-2005
| | Posted on Saturday, July 09, 2005 - 10:50 am: |
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Good question...I do know some people upgrade to '69 finals in their rigs along with a peak/tune but they are putting them in smaller Cobra radios and such just to get the 20w without blowing up the stockers they came with. I'd like to find a list of popular finals and they're output capactity value..just something for the notebook ya know?
I also await an answer to your question...sorry 
Hank '905 |
Slowhand
New member
Username: Slowhand
Post Number: 7
Registered: 7-2005
| | Posted on Saturday, July 09, 2005 - 10:55 am: |
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It has 2 x sc2290's in the amp section. It's got a single 2sc2312 in the radio output. The power supply barely handles the 2290's . I wouldn't try it. |
Twowatt
Junior Member
Username: Twowatt
Post Number: 11
Registered: 7-2005
| | Posted on Saturday, July 09, 2005 - 12:50 pm: |
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i agree with slowhand, u need to get an external power supply to run the amp section on the rear panel - should be 30-40 amps, adj to 16 or 17 volts. don't put 18 volts on the 2290's. 16 is plenty.
this will also enable u to use the radio with just the single 2312 for more "local" contacts, tho i have noticed that the turbo does not seem to swing as well as the basic saturn. |
Brewdirect
Intermediate Member
Username: Brewdirect
Post Number: 131
Registered: 7-2004
| | Posted on Sunday, July 10, 2005 - 4:48 am: |
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Yeah..I've heard stories of peoples power supplys on those kickin the bucket cause it couldn't run the finals once the radio had been peaked real high.
Power supply wouldn't handle much more than the stock guys. |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2032
Registered: 12-2001
| | Posted on Sunday, July 10, 2005 - 10:08 am: |
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A 25 amp supply would be plenty,you can run a klv550 with the huge sd1407s on one all day,so 2 puny 2sc2290s shouldn't be a problem.Bigbob |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 523
Registered: 6-2004
| | Posted on Sunday, July 10, 2005 - 10:23 am: |
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That's pretty much the case with all base radios, not just the high powered ones. And it's really noticeable on SSB. Uniden Washington bases are the most common that I've come across. |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 524
Registered: 6-2004
| | Posted on Sunday, July 10, 2005 - 10:26 am: |
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I forgot to mention the nickname we had for the early high powered base rigs - Saturn Turblows. We'd actually make casual wagers about how long it would be before a new radio would be off the air for one reason or another. |
Tech808
Moderator
Username: Tech808
Post Number: 6308
Registered: 8-2002
| | Posted on Sunday, July 10, 2005 - 10:46 am: |
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Thats a good one. 
Lon
Tech808
CEF808
N9OSN |
Twowatt
Junior Member
Username: Twowatt
Post Number: 19
Registered: 7-2005
| | Posted on Sunday, July 10, 2005 - 1:20 pm: |
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Bigbob is correct to say that a 25 amp supply will work under normal 13.8 volt conditions to pwr the 2290s; assuming 160w pep out typically, and using typical efficiencies, the typical maximum current peaks will be 23.1884058 amps @ ~1:1 swr.
however, using toshiba's data sheets and extrapolating from them the pep output at 16 volts [where i was suggesting the pwr supply voltage could be set], (with true 10w pep input) is 217.6w pep; and using towsheebah's {i luv saying that word } worst case scenario, the maximum current peaks will be 38.85714286 amps. granted, this is not typical but i prefer to err on the conservative side - better safe than sorry, (typical should be closer to 30 amps, but what's 10 more amps between friends?) regards |
Ajm1571
Junior Member
Username: Ajm1571
Post Number: 44
Registered: 12-2004
| | Posted on Sunday, July 10, 2005 - 10:41 pm: |
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Well I guess that explains it then...lol..r the 2290's the upgrade or come stock with the radio? I have not opened it an will not open it to find out what is in it. I just know it should do more than what it is doin with the mosquito that someone put in it. Only shows 90 watts on da meters. Just thought the finals might be bad. But i apprecitae all da info tho..Learn somethin knew everyday
Thanks,
Allen CEF565 |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 1035
Registered: 7-2004
| | Posted on Monday, July 11, 2005 - 12:06 am: |
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that's why they change those big electrolytic caps in the power supply section to BIGGER electrolytic caps. not a cure-all, but it helps. |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2036
Registered: 12-2001
| | Posted on Monday, July 11, 2005 - 5:22 am: |
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Most supplies I am familiar with will handle peak currents of twice their rating,I thought the Idea behind increasing voltage was to increase power without exceeding the supplies current rating IxV=P,if the device is trying to draw to much current then increase the current available or increase the voltage to lower the devices demand for current,but of course you have to be aware of voltage breakdown ratings.Some pills are to be used at 48 volts and produce some pretty good outputs but they can be run on a piddling 7 amp supply.A plan I know of for a 2 pill 600(1000pep)watt amp uses transistors @ 48volts,it gets this power from a 12 to 15 amp power supply,I would love to contruct this but alas total cost is around 600 dollars.Bigbob |
Slowhand
New member
Username: Slowhand
Post Number: 9
Registered: 7-2005
| | Posted on Monday, July 11, 2005 - 4:23 pm: |
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If you were adventureous (ie. don't mind replacing transistors), you could run the amp off the unregulated output of the supply, before the regulators. If the voltage isn't too high. (Too high being different according to who you ask.) The transformer appears to be much sturdier than the 2 2n3055's would indicate. Also most 35 amp supplies have 4 2N3055's on the back.
Personally I'd swap the 2N3055's for a pair of 2N3771's peak the radio out and forgit it. |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 534
Registered: 6-2004
| | Posted on Monday, July 11, 2005 - 5:44 pm: |
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Bigger caps won't help to increase the current delivery. It may help to keep the voltage steady at the current limit, but if you get to that point you should back it down, use an external supply, or do some heavy modification.
Patzerozero - I like the picture in your signature - LOL! |
Ajm1571
Junior Member
Username: Ajm1571
Post Number: 47
Registered: 12-2004
| | Posted on Monday, July 11, 2005 - 11:49 pm: |
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OK now i totally confusterated...lol...I guess the smartest thing to do is take it to a tech an have him figure it out...lol..And I really do appreciate all the info..Like I said earlier, I learn something new everytime I look into this post |
Twowatt
Junior Member
Username: Twowatt
Post Number: 21
Registered: 7-2005
| | Posted on Tuesday, July 12, 2005 - 1:08 am: |
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we may be talking semantics here , but astron reports their "switching" 25amp constant supplies with an ics of 30 amps. however, their "linear" 25s have an ics of 35 (with foldback limiting).
tripp lite's 24 has an ics of 30
mfj's 22 specs a max of 25 amps
hope this helps. ;) |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2042
Registered: 12-2001
| | Posted on Tuesday, July 12, 2005 - 9:45 pm: |
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I don't have a current limiter on my supply,the transformer has dual primaries and dual secondaries and weighs 16 pounds,110 in 25 out 47,000 mfd caps, 2 35 amp bridges in parallel,317t and 9 mj2955 pnp passes,powers my boomer nicely and varies in voltage at output .2 volts on ssb,oh got a one farad cap on output too.I think this unit,just needs more pills to get 70 amps continuous.In unregulated mode it has enough beef to jump start a car,yehaw.Bigbob |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2043
Registered: 12-2001
| | Posted on Tuesday, July 12, 2005 - 9:59 pm: |
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AJM1571,find a 40 amp supply with blown transistors but good transformer or get a 35 amp filiment transformer from rfparts,rip out your old trans former,disconect suply from main board,adjust the voltage then reconnect to board,get 2 2n5301 pass transistors (30 amps,200 watts) and get 2 more filter caps of same size,this should make it so you can volt your finals if you want,run 2 2sc2879s of course have a tech put these in or heck get another heat sink and run a matched quad of 2290s,then you'll have the biggest baddest saturn turbo in the state.Bigbob |
Twowatt
Junior Member
Username: Twowatt
Post Number: 24
Registered: 7-2005
| | Posted on Tuesday, July 12, 2005 - 10:43 pm: |
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that's a heck of a honker u got there. sounds great!!! |
Ajm1571
Junior Member
Username: Ajm1571
Post Number: 49
Registered: 12-2004
| | Posted on Tuesday, July 12, 2005 - 11:57 pm: |
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Thanks fer the info Bigbob..Like I said I will take it to a tech and let him have fun with it. I just want the radio doin what it should. Someone put in a mosquito of some size..dont know what size but I know the radio should do alot more than 90 watts..I mean I cant complain cause I do, do alot of skip shooting with it.
Thanks fer all da info,
Allen
CEF565 |
Slowhand
Junior Member
Username: Slowhand
Post Number: 16
Registered: 7-2005
| | Posted on Saturday, July 16, 2005 - 1:57 pm: |
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A mosquito board with one transistor? Do you mean it's installed instead of the 2 final board or as an extra driver, Something don't sound right about that. Are you sure it's a Turbo ?
slowhand |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 1058
Registered: 7-2004
| | Posted on Saturday, July 16, 2005 - 11:20 pm: |
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thankyou, hollowpoint!
actually, we only put bigger caps in the 'standard' bases, like the washington, & original dual final ham jumbo & galaxys after peaking 'em. the supply was sufficient for the 20-40 watts you could get out of 'em, the caps helped keep the output steady by keeping voltage from dropping too quickly(like what they do now in cars with those thumpin' stereo's). i guess when you try to crank voltage & overwork 160 watts worth of transistor an extra 50% it ain't gonna cut it. |
Ajm1571
Member
Username: Ajm1571
Post Number: 52
Registered: 12-2004
| | Posted on Sunday, July 17, 2005 - 2:11 am: |
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Well it does say Turbo on the front of it Slowhand. I am not sure if it is a mosquito or not...i was told it was.. i know the switch is attached to a board in the back of the radio an when u flip it on the radio only does 90 watts and the lights in my house trailer dim a little . But i thought these radios did more than that peaked an tuned without any switches. When i bought it i was told it would do 180 with the switch on, boy was i lied to.. I mean i shoot alot of skip but i just want it doin what it supposed to. Actually i want to get as much swing as possible. I'm not so worried about maxin it out to it's full potential. i want swing....lol..but as i said before, i appreciate all da info.
Allen
CEF565 |
Hotwire
Intermediate Member
Username: Hotwire
Post Number: 438
Registered: 1-2005
| | Posted on Sunday, July 17, 2005 - 10:45 am: |
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I have a guestion maybe somebody knows. I know that AM mode has a little swing in it but lately in my area I have heard some guys talking in AM mode whos radios are different. I can see no real crrier or DK on my meter when they talk. Its all swing like they are on sideband. They dont sound all that great either but are loud and have a very big swing. What gives? There is no solid meter reading. If they DK its the same as sideband, nothing. |
Nobodyknows
Junior Member
Username: Nobodyknows
Post Number: 38
Registered: 4-2005
| | Posted on Sunday, July 17, 2005 - 11:59 am: |
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Hotwire.. That swing is done by lowering the radios DK to like 1/4 watt and swinging to maybe 20 30 watts depending on the radios power. Also if using an amp they can get an extremely low dead key or just barely enough DK to key up their amp and swing like crazy.. That kind of setup usually sounds like craapola in my recieve too. |
Slowhand
Junior Member
Username: Slowhand
Post Number: 17
Registered: 7-2005
| | Posted on Sunday, July 17, 2005 - 12:26 pm: |
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Ajm1571 I'd like to see a pic of that board. |
Ajm1571
Member
Username: Ajm1571
Post Number: 55
Registered: 12-2004
| | Posted on Sunday, July 17, 2005 - 1:31 pm: |
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I wish I could take a pic of it slowhand. It is a little square board attached in the back of da radio. I know if u disconnect it internally, the switch doesnt do anything . Then it only keys no more than 10 watts but the radio still keys up an i have recieve. But when u hook it back up an flip the switch i get 90 watts. I have no clue
Allen
CEF565 |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 1065
Registered: 7-2004
| | Posted on Sunday, July 17, 2005 - 6:54 pm: |
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exactly as nobodyknows said, hotwire. i can turn my XL down to less then 1 watt, swing 15+, it WON'T key the davemade til i talk-then the dave will key 0 and swing 800+. NOW THAT SOUNDS LIKE CRAPOLA! |
Slowhand
Junior Member
Username: Slowhand
Post Number: 18
Registered: 7-2005
| | Posted on Sunday, July 17, 2005 - 9:42 pm: |
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A turbo has a fairly large heat sink on the back.
The 2 transistor board is mounted on it , the board is inside the radio and covered with a shiny tin housing. On the back of the radio you can see the 2 2n3055 regulators. These aren't amp transistors they are for the power supply. You can't see the amp transistors from the back. 90 to 100 watts is about right for a bone stock turbo. The resistor diode mode will get ya another 30 or 40 watts pep and will let you turn your key down without affecting your swing as much. |
Ajm1571
Member
Username: Ajm1571
Post Number: 56
Registered: 12-2004
| | Posted on Monday, July 18, 2005 - 1:26 am: |
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Oh ok...see the board that the switch is attached to is mounted in the right hand top corner in da back(when u face the radio). I know it is not attached to the back pannel by the heat sink. It ios attached on a piece of metal that runs along the back side just inside the back panel..I had to mount a couple of PC fans to the heat sinks to keep it cool. But like i said if i disconnect that board, the radio is only doin maybe 10 watts..Eventually i will take it to a tech an have him figure it out....lol |
Slowhand
Junior Member
Username: Slowhand
Post Number: 19
Registered: 7-2005
| | Posted on Monday, July 18, 2005 - 4:24 pm: |
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If the tin housing and the 2 transistor board is gone, someone removed it and put in the mosguito board..not good. original board is much better.
slow |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2049
Registered: 12-2001
| | Posted on Monday, July 18, 2005 - 6:19 pm: |
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OR somebody went to the trouble to replace the standard front panel with a turbo front panel to get more money for it and added a mosquito board and an extra power transistor to the heat sink,hoping to dupe an unsuspecting novice!Bigbob |
Slowhand
Junior Member
Username: Slowhand
Post Number: 22
Registered: 7-2005
| | Posted on Monday, July 18, 2005 - 10:04 pm: |
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That devious !! |
Ajm1571
Member
Username: Ajm1571
Post Number: 57
Registered: 12-2004
| | Posted on Tuesday, July 19, 2005 - 12:04 am: |
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U know i never thought of that...wouldnt surprise me none though. What should i look for to see if thats what they did.. I mean that by what do you think they might have removed. Slowhand, If you have yahoo, email me a pic of what your talkin about. ajm1571@yahoo.com. would appreciate it
Allen
CEF565 |
Slowhand
Junior Member
Username: Slowhand
Post Number: 31
Registered: 7-2005
| | Posted on Sunday, July 24, 2005 - 10:17 am: |
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Looked everywhere couldn't find a pic. I sold my turbo last year.
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