The OGS-50W - Stay Away!

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  • Опубліковано 11 гру 2024

КОМЕНТАРІ • 120

  • @DonzLockz
    @DonzLockz Рік тому +16

    Oh god, what a fluster cluck!😮
    Thanks for saving us time and money T.O.🍻👍

  • @leo2944
    @leo2944 Рік тому +5

    I was about to buy it and got a hys tc300 instead, what luck
    Thank you very much for the video!!!

  • @johnathanasiou9284
    @johnathanasiou9284 Рік тому +3

    Wow, thanks for the heads up TO & shocked at the lack of protection & BPF circuitry.
    Agree, to bring it up to spec you may as well buy an XPA or similar better amp.
    There are a stack of these simplistic RF amp designs all over the net but the bleed back is worrysome as it can easily cook the RF finals in your rig.
    I've built similar amps in my college days & is something every ham should try at least once.
    When I've seen you test other amps their power output was fairly consistent.
    I feel the toroid transformer construction is only scratching the surface of what's wrong with this amp.
    Can only dare imagine how Mike (Mikes Radio Repair) & Peter (TRX lab) would react to this amp!

  • @graybeardradio7778
    @graybeardradio7778 Рік тому +10

    No low pass filters on the output of the AMP, and it is likely the harmonics are not suppressed the required 43dB with respect to the fundamental required by the FCC. So it is probably not legal to have on the air, but really nice that it destroys itself keep you from violating the rules.

    • @haramanggapuja
      @haramanggapuja Рік тому

      I didn’t waste on that’n ‘cause I knew it was unfiltered. If it had filtering, bet it would have done better. Worse yet: there are a couple versions ‘out there.’

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Small Favors...

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Right!

  • @d3w4yn3
    @d3w4yn3 Рік тому

    Looks like you saved me $75, and maybe the cost of a repair to one of my rigs! Glad to see reviews that tell the ugly truth, when the truth is ugly!

  • @davidincalifornia3711
    @davidincalifornia3711 Рік тому

    Thank you for doing this video. You prevent me from making a purchase I would have regretted.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      No problem! The new hot cheap amp is: ebay.us/RxZ9x9 I haven't gotten one for testing yet, but others have said its a good start for its price. I need to get one to test out.

  • @don_n5skt
    @don_n5skt Рік тому +5

    The Micro PA50 works much better for me. It looks like it does not have any protection in the Amp. Based on final failures in the SbitX, the finals failing will cause a dead short when they go.

    • @don_n5skt
      @don_n5skt Рік тому +3

      That amp has a lot of issues. There is no protection circuits. That is one of the things the Micro PA50 has that this amp doesn't. Lots of protection built into the Amp.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +3

      Dead short was what happened, yep. Not pretty. I can't imagine if I had a battery inline how much smoke that would have made.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +2

      I like the Micro PA50 so far, eventually I'll get one to play with.

    • @johnathanasiou9284
      @johnathanasiou9284 Рік тому +1

      All the more reason to have an inline fuse like TO's fuse kit

    • @don_n5skt
      @don_n5skt Рік тому

      @@temporarilyoffline The sBitX's did fry like that and it was not a good thing.

  • @vu3gwn
    @vu3gwn Рік тому +1

    Exact same thing happened to mine. This cannot handle any antenna greater than 1:1.5 SWR. One of the 530 was blown. Replaced it and it came back to life. It works, but it's fragile. Sold it to a friend who knows how to handle it with care. Oh, another thing, when the 530N blows out, the dc power plug is shorted. Be careful.

  • @richardchambless12
    @richardchambless12 Рік тому

    I knew that thing had a pair of IRF530s before you took the lid off. There are several kits that use those switching Mosfets. They put out a lot of power on the low bands but they short out easy as they aren’t designed for RF amplification.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Hams repurposing one thing to do another thing... No problem there, it's what we do. The micro PA50 uses the same FETs, but is a better design. I'd still like to see more protections built in though

  • @ERICtheLATE
    @ERICtheLATE Рік тому +1

    Amps, weather for audio or rf, are rarely rated at rms, they are more interesting if they are wearing an emblem of peak.
    It can do peak safely, for a few seconds.
    That 50watt amplifier, with ssb or cw, should be fed the specific amount of power to be just under that, especially with cw, which is short carriers. SSB could peak right on 50watts, or a tad more, but then you are stressing the recycled solder, and whatever they picked out for components. It needs a rig set to a specific setting of happy place and never exceeded, or just there to bypass straight to antenna. Once you have a few of them, you can start combinding them. A ssb signal @ 3 watts peak, driving 2 of those, then those driving 6 of those, of course after you develop a harmonic elimination circuit to keep it clean and focused on the bands of choice. Then you discover the little white transistors, with much higher gain and peaks, but that is kinda trendy.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +2

      Pills? :-)

    • @321CatboxWA
      @321CatboxWA Рік тому

      @@temporarilyoffline What he said was , you over drove it to failure . never look to see advertised watts in RMS/AVG . 50w PEP not RMS . Its a gateway to popping skylab pills if your keen. near as I can finger from Mr. Late offered up.

    • @321CatboxWA
      @321CatboxWA Рік тому +1

      Damn Skippy

  • @victorcharlie7491
    @victorcharlie7491 Рік тому

    Thank you sir!

  • @bentleyhar
    @bentleyhar Рік тому

    Great video first time watching one of your videos you have a new subscriber

  • @DirtyPlumbus
    @DirtyPlumbus Рік тому

    I do not have a big batch of adapters, it is a definitely an issue I need to work on.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +1

      Accumulation from Amazon is your friend! I got some here, some there, then got the case.

  • @bloguetronica
    @bloguetronica Рік тому

    It matched my expectations. :)

  • @whiskerlesswalrus
    @whiskerlesswalrus 11 місяців тому

    I had a person hand one to me blown up in the same manner as that one that failed for you and found the MOSFET shorted-the soldering is pretty bad and I noticed around one of the BNC connectors a spot on the board where it looked like it got hot and discolored the board-which also may be the soldering job on it from the factory-they have always said-if it looks too good to be true-like 50 watts for about 50 to 75 dollars it probably is too good to be true

    • @temporarilyoffline
      @temporarilyoffline  11 місяців тому

      Yeah, I was pretty shocked. These are built by people that don't know what radio is.

  • @agoraphobicadam1171
    @agoraphobicadam1171 Рік тому

    Thanks for watching out for us. KO4HPC 73

  • @jonaswalther9245
    @jonaswalther9245 Рік тому +2

    Shorted mosfet!

  • @logicman91
    @logicman91 Рік тому

    Coils are shorted the wire varnish probably had a scratch in it

  • @KK6USYHamRadioAdventures
    @KK6USYHamRadioAdventures Рік тому

    Dang used solder is a thing? Nice review and look inside.

  • @KS0JD
    @KS0JD Рік тому +1

    Unless you really want to why would you want an amp put together by your brothers kids! Spend the money else ware. Great video! 73

  • @sm6moj30
    @sm6moj30 15 годин тому

    Thank you. I have been warned!

  • @P.SeanCoady
    @P.SeanCoady Рік тому +2

    No filters ....noise box.

  • @Randy-xs4wm
    @Randy-xs4wm Рік тому +1

    This low quality amp is only meant to be used (per its spec) from 3 to 21 MHz. I notice that you began your test on 160 meters (out of manufacturer's spec) and then ran through the "approved" 80-15 meter bands but then did a bit of transmitting on 12 and 10 meters (again, out of spec), and finally returned to out-of-spec 160 meters where you blew up the amp. I'm not saying the amp wouldn't have blown up anyway given that it's made of reused solder and dog food, but I am saying that you may have sped up the problem by using it in ways the manufacturer never intended. Thoughts?

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Good points! I don't know where I got the idea that it worked on those bands. I'd expect it just wouldn't be efficient. The IRF530s aren't even meant for this application anyway.

    • @ERICtheLATE
      @ERICtheLATE Рік тому

      @@temporarilyoffline Pushing the envelope, by instinct. I bet it would be sweet on 40, 20 metric bands. Would be cool if everything was repairable via firmware update. This may have provided a break.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +1

      That's what I do!

  • @migalito1955
    @migalito1955 Рік тому

    I bought an OGS-50W before I saw the videos that dislike it. I figured they abused the amp, thus their issues.
    To be safe I used a 40 meter resonate antenna. I also used my bitx-40, but since at 13.8 volts with adequate amps it puts out around 7 watts I decided to try running the bitx-40 at 9 volts with at most 2 amps. This brought my rigs power down to 0.8 watts on my crappy meter, but the combination of an input of 0.8 watts and the OGS-50worked great. I'd say my meter suggested 28 watts.
    The only issue is the recieve to transmit relay has a delay of about 200 miliseconds. I spoof this by tapping the mic before starting my audio. On digital modes this could be an issue but I really bought it for giving more kick to my Qrp kit SSB rigs.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Nice, glad it worked out well for you! I agree on the 200ms issue being a problem.

  • @TheGeekiestGuy
    @TheGeekiestGuy Рік тому

    Got damn. I see a lot of recycled solder. I just took apart a clone of a btech (so a clone of an anytone). The only actual part problem was the roach issue. I'll update you if you want since I just found the gnar inside. But if it costs me more than the unit to clean it and get it running, then I think I quit.😆
    I kid, but you know what I mean.

  • @chriscoel
    @chriscoel Рік тому

    I need a link/source for that bnc cable jumper that went from x6100 -> amp

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      amzn.to/3CqqtiI the one I have is the same spec, but mine is unavailable

  • @ChaplainDaveSparks
    @ChaplainDaveSparks 4 місяці тому

    And it can’t be FCC certified because it is capable of amplifying 27 mHz/11 meters with a 5w input.
    *73 de AF6AS*

    • @temporarilyoffline
      @temporarilyoffline  4 місяці тому

      As you know, If you're a ham it doesn't need to be FCC certified, that's our job.

    • @ChaplainDaveSparks
      @ChaplainDaveSparks 4 місяці тому

      @@temporarilyoffline True, but it can't _"legally"_ be sold commercially ... (Yes, there's always AliExpress ...)
      I remember the days when commercial linear amplifiers couldn't cover 10/12 meters unless you identified yourself as a ham and got a workaround, just like the _MARS/CAP "out of band"_ mods.

  • @TrevorWeston-vc9zq
    @TrevorWeston-vc9zq 5 місяців тому

    These are not designed for 10 meters ! The cut off is 24 mhz , pretty sure thats why it blew

  • @45auto
    @45auto Рік тому +1

    Oof, when a tinkerer doesn't think it's worth a tinker's da**.

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Right, I can't even see where you'd get usable parts out of it ;-)

  • @q07906
    @q07906 9 місяців тому

    Specs on Aliexpress state that this amp is designed for 3-24Mhz

  • @TheSmokinApe
    @TheSmokinApe Рік тому

    I’d say that amp is surprisingly bad but I ain’t surprised 😮

  • @neilgodfreybartley3143
    @neilgodfreybartley3143 Рік тому +1

    Instantly...🤔

  • @joeblow8593
    @joeblow8593 Рік тому

    Well, thanks for saving us $75.

  • @TonyLing
    @TonyLing Рік тому

    The sort of accessory that would make even MFJ blush

  • @hillbilly4christ638
    @hillbilly4christ638 16 днів тому

    No real heat sink and no fan. Where is all of that heat going to go? I like the sound effects when it failed. No smoke, no smell and just boom.

    • @temporarilyoffline
      @temporarilyoffline  16 днів тому

      Right! It's like we learned nothing in the last 40 years!

  • @jolebole-yt
    @jolebole-yt Місяць тому

    According to its specs it will operate from 3-24Mhz. I think once you went to 28Mhz you killed it 😂

    • @temporarilyoffline
      @temporarilyoffline  Місяць тому +1

      Probably did, but that's ham radio: push it till it breaks them make it better!

    • @jolebole-yt
      @jolebole-yt Місяць тому

      @@temporarilyoffline It cannot be fixed unless its broken first 🤣

    • @temporarilyoffline
      @temporarilyoffline  Місяць тому

      @@jolebole-yt exactly!

  • @AmRadPodcast
    @AmRadPodcast Рік тому +1

    No filters! Mica insulators double-stacked - doesn't make sense why they would do that; decreases thermal conductivity... And that RF sense circuit. Hot garbage!

    • @temporarilyoffline
      @temporarilyoffline  Рік тому +1

      I thought the insulators might appear that way on camera, it was one per FET, not two stacked. But as you know, you can't go back and re-shoot something later. The whole thing was hot garbage though!

    • @AmRadPodcast
      @AmRadPodcast Рік тому

      @@temporarilyoffline ah I see. Thought it was a manufacturing error.

  • @madcarew5168
    @madcarew5168 Рік тому

    Lead free is a curse!!

  • @phillyedhrj
    @phillyedhrj Рік тому

    Amplifee? Sounds like a Cajun amplifier.

  • @Dr-T
    @Dr-T Рік тому

    Where are the low pass filters for each band?!
    This amp shouldn't be allowed on sale without the LPF as it will fail all the necessary test/approvals.
    73
    Bruce G4ABX

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      You're right! There aren't any!

    • @Dr-T
      @Dr-T Рік тому +1

      @@temporarilyoffline Amazing!
      Its a bit like many of the CB 'Burners' of yesteryear 🙂
      73
      Bruce

  • @jameyevans29
    @jameyevans29 Рік тому

    What if it’s your watt METEE? Lol

    • @temporarilyoffline
      @temporarilyoffline  Рік тому

      Since the amp wouldn't power on and the watt meter does, I'm sticking with my story.

    • @jameyevans29
      @jameyevans29 Рік тому

      @@temporarilyoffline I don’t blame you. Thanks for the video

  • @slappomatthew
    @slappomatthew 7 місяців тому

    I mean the lack of a LPF should make this a complete non starter.

  • @JT-py9lv
    @JT-py9lv Рік тому

    *Caveat Emptor*

  • @W4TRI_Ronny
    @W4TRI_Ronny Рік тому

    Heat Shrink compound! You found the R! I'm just letting this video run to give you the view count. I would not buy this garbage at any price.

  • @G4BUD
    @G4BUD 7 місяців тому

    No low pass filters. DO NOT BUY THIS!!

  • @istvanszabo8698
    @istvanszabo8698 10 місяців тому

    Not finished design.

  • @MeineVideokasetten
    @MeineVideokasetten Рік тому +1

    #Short: *It's crap* !

  • @Philip-KA4KOE
    @Philip-KA4KOE Рік тому

    Need to wash your hands from touching crap.

  • @eduardogarciamontesdeoca5935
    @eduardogarciamontesdeoca5935 24 дні тому

    It’s better to build an amp from scratch than spend a penny on that poorly designed amp… without a LPF section is a huge NO

  • @lampshadesneeded
    @lampshadesneeded Рік тому

    Ironic for an american to criticise spelling of the English language