At 6:06, this is not a keying transistor, but receive preamp ckt on top of it's relay. The keying transistor is to the left of the transmit relay. And at 6:11, the coils are not for tuning, but are part of a clever circuit. It's a cheap way to pass DC for the class-B bias, while allowing the RF to share the same path using two capacitors as bypass. This allows Xforce to use a 2-pole relay in an amp that features Class-B operation instead of requiring a 3-pole relay. (for RF in/out and bias.)
Running mine for nearly 3 months now. No complaints whatsoever. SSB PEP input to amp is 25 watts = 350-375 watts PEP out of the TNT350. In "Hi" with 5 watts DK input on AM = 100 watts DK from amp with voice peaks around 250 watts.
Fan is a tad loud...
Remember it is B Biased. "Volting" is not recommended. My P/S is set at 13.8 Vdc to achieve these figures.
@blitztex1979 Preamps work awesome! I have a Texas Star DX 350 HDV Linear and the peramp really brings in the week signals and increases them. Working an Australian station today on the DX his signal was around 2 db most of the time and the preamp brought his signal to 7 db
well i just ordered one, just ordered it striait from xforce, $245 shipped well worth it the comp box x -force 200hd is similar its 210.00 plus 20 shiping so $230, and it has no pre-amp or ssb delay and is class c and not b like the tnt, tnt is a better amp, period
cool video and a great amp i love x-force amps i run a x-80 2 pill and it puts out 225 watts and will do around 270 with a better driving radio, tnt is a very well build amp i was considering one before i bought the x-force, my next amp will be the midnight specail line thinking on buying the the 250 for my car, and i am hopeing you will do a review on them before i do, thank you very much, i love to see your new videos lol 73's
Im buying a TNT T100 and heres my set up i have a cobra nw wx st 25, a wilson little wil antenna that can handle 300 watts. Any idea what range i could get out of that?
If you would talk less you would not make your self look so clueless. If you do not test the bias voltage then you have no way of knowing the class it is operating in. That is the same shoddy design used in there magna force amps. There is no balancing to that amp either. The reason they use that many relays is because they have not figured out how to do it with transistors. One is bias supply voltage, one is keyup/receive and the other is premap.
@ 5:40 into the video you mentioned that this amp being a high drive was able to take up to 220 watts of input.. Might want to redeem yourself and re think that. I'd like to see you video that. I just love to see other peoples 10 ohm smoke. Once it gets out it is kind of hard to put it back, tho.
I would just like to point out that you drove the amp with 22 watts and not 18 watts input like you stated at the end of your video. Also that amp is only rated at 120 watts max input not 240 watts. Other than that very nice video review.
ive got the tnt 600HD brand new and its got a swr 2:1 INPUT from the radio. The output SWR from the amp to the antenna is 1:1.
Need i worry about my radio or just enjoy??? i emailed xforce who told me swr is a resonance of the antenna.........
Please help and please do a video on the 600HD..
God Bless Rod
rredbeak 1 month ago
At 6:06, this is not a keying transistor, but receive preamp ckt on top of it's relay. The keying transistor is to the left of the transmit relay. And at 6:11, the coils are not for tuning, but are part of a clever circuit. It's a cheap way to pass DC for the class-B bias, while allowing the RF to share the same path using two capacitors as bypass. This allows Xforce to use a 2-pole relay in an amp that features Class-B operation instead of requiring a 3-pole relay. (for RF in/out and bias.)
cminib 2 months ago
This has been flagged as spam show
Running mine for nearly 3 months now. No complaints whatsoever. SSB PEP input to amp is 25 watts = 350-375 watts PEP out of the TNT350. In "Hi" with 5 watts DK input on AM = 100 watts DK from amp with voice peaks around 250 watts.
Fan is a tad loud...
Remember it is B Biased. "Volting" is not recommended. My P/S is set at 13.8 Vdc to achieve these figures.
You can't go wrong with this gem.
reversegears 11 months ago
Comment removed
reversegears 11 months ago
had mine for like 3 weeks and i love it it will hit 400 pep with my stryker 440
hamtalker2007 1 year ago
Cool, I just ordered mine today from xforce website. I cannot wait
blitztex1979 1 year ago
How is the preamp on this 350? Do preamps really pull in weak signals
blitztex1979 1 year ago
@blitztex1979 pre amp seems to work really clean, or at least mine is is love this amp
hamtalker2007 1 year ago
@blitztex1979 Preamps work awesome! I have a Texas Star DX 350 HDV Linear and the peramp really brings in the week signals and increases them. Working an Australian station today on the DX his signal was around 2 db most of the time and the preamp brought his signal to 7 db
BananaJSSI 2 months ago
well i just ordered one, just ordered it striait from xforce, $245 shipped well worth it the comp box x -force 200hd is similar its 210.00 plus 20 shiping so $230, and it has no pre-amp or ssb delay and is class c and not b like the tnt, tnt is a better amp, period
hamtalker2007 1 year ago
what kind of amp draw have you seen from it?
hamtalker2007 1 year ago
cool video and a great amp i love x-force amps i run a x-80 2 pill and it puts out 225 watts and will do around 270 with a better driving radio, tnt is a very well build amp i was considering one before i bought the x-force, my next amp will be the midnight specail line thinking on buying the the 250 for my car, and i am hopeing you will do a review on them before i do, thank you very much, i love to see your new videos lol 73's
hamtalker2007 1 year ago
Im buying a TNT T100 and heres my set up i have a cobra nw wx st 25, a wilson little wil antenna that can handle 300 watts. Any idea what range i could get out of that?
TheDude8689 1 year ago
@TheDude8689
hey the tnt 100 will do 120 pep max and it depends on the drive from your radio, take care
hamtalker2007 1 year ago
ew, class b?
noriceburners 1 year ago
this is a neat little HD class B amp with auto SSB, so what if you slipped up on the pep, still a great review!!!
just to be clear:
Max input carrier of 5w or 120w max carrier from amp. Max peak input 120w.
redroughneck1 2 years ago
This comment has received too many negative votes show
This is the stupidest looking amp I have seen in a long time. The idea that you run such garbage on a CB shows that you are a fool.
TheUncleDougger 2 years ago
the fan blows out not in..
needs to be turned around@
neubie182 2 years ago
@neubie182 it sucks air in from the bottem back and it comes out the top there is a heat sink under the amp, it a pretty cool cooling system
hamtalker2007 1 year ago
review my amp
posiden125 2 years ago
220W pep input? No way this amp will handle that.
classicwax 2 years ago
CB Repair Guy.
If you would talk less you would not make your self look so clueless. If you do not test the bias voltage then you have no way of knowing the class it is operating in. That is the same shoddy design used in there magna force amps. There is no balancing to that amp either. The reason they use that many relays is because they have not figured out how to do it with transistors. One is bias supply voltage, one is keyup/receive and the other is premap.
Bias sags under load to C anyway.
cleanrf 2 years ago
so the input transformer IS NOT gounded its bais with that tx star curcuit,do u know the bais volt?
1965semaj1 2 years ago
ok. very well, lock me chanell is marcelobanheira in youtube. contry end BRAZIL ok, good,good.
marcelobanheira 2 years ago
@ 5:40 into the video you mentioned that this amp being a high drive was able to take up to 220 watts of input.. Might want to redeem yourself and re think that. I'd like to see you video that. I just love to see other peoples 10 ohm smoke. Once it gets out it is kind of hard to put it back, tho.
morgietheblackdog 2 years ago
dsjgdfhg rhg ihgih dskhdfhgkfdsznfdsnd bfdbfd
mdgrmt 2 years ago
I would just like to point out that you drove the amp with 22 watts and not 18 watts input like you stated at the end of your video. Also that amp is only rated at 120 watts max input not 240 watts. Other than that very nice video review.
superman18011 2 years ago
I have been saying that about Texas star for years i'm sure glad someone else noticed that to. 73.s
wizardbuilt 2 years ago
are you goin through an antenna or dummy load?
ToughLuckMobile 2 years ago
Very nice amp!
BLUZUMR 3 years ago
great video looking forward to more amp reviews
ToughLuckMobile 3 years ago