42 thoughts on “Blog”

  1. Hello, is there a finished and marketed product? Mod. both bands has 1.8 / 54 mhz and Vhf 142/148 mhz.
    Thanks for info and price.
    73 greetings

    1. Hi , I am not selling an amplifier (Only some parts). Case and Firmaware available immediately, the remaining modules are made to order the lead time is 2 months. For a complete assembly you must buy some parts available on Ebay AliExpress, Ebay. The firmware and the casing can be adapted to the modules of W6PQL.COM and EB104

    1. Norm Mccollough

      Hi. Can you send a price list for the parts and lead times. Heard this amp discussed on 80m and seems to have gotten glowing remarks. Best wishes.

  2. Eduardo LALO Giordano

    hola Kenny
    cuando crees que estarán disponibles los kit completos ?
    realmente me parece un excelente producto y quiero comprar uno armado o un kit completo para armar la nueva version III
    te felicito un lineal muy bien diseñado y actual y lo mas importante todos los compradores están satisfechos ….


    1. Hola Eduardo, mi trabajo principal me toma toda la semana, e dedicado el fin de semana y los tiempos libres para emprender este proyecto . Tardare 2 meces en tener una de estas piezas listas

  3. For all readers, i am one of the many happy and satisfied customers using a Mercury III for a year now.
    I use it every day at full power of 1200W driven by an IC7610 with just 40W output and the IM products at that level is always -37 db.
    Reports received are that my TX is very narrow with no splatters at all.
    It works warm at long periods of TX. Never hot
    Fan is very quite and automatic band switching is very fast with just one PTT press.
    I have owned in the past the Expert 1.3K and also the PalStar 1K and by far this kit works much better besides that it look nicer

  4. buenas tardes estoy interesado en el amplificar me gustaria si pudiera tener una llamada con tigo por favor 9195249030 gracias

    1. Hi Virgilio, I am not selling an amplifier (Only some parts). Case and Firmaware available immediately, the remaining modules are made to order the lead time is 2 months. For a complete assembly you must buy some parts available on Ebay AliExpress, Ebay. The firmware and the casing can be adapted to the modules of W6PQL.COM and EB104

    1. Hi, the Case is compatible with Power Supply of communication servers, you can use ETP-48100 server (53 Volt, 57 amps)

  5. Your (built controller board) shows out of stock, is it possible to purchase the built controller board? Of course I plan to purchase all the other PCB’s but would like a complete controller board.
    Thank You


  6. Hi

    I understand that you do not sell a complete kit. Is there a reference or article/website that would help me understand what I need to order and do in order to construct a functional unit? I have built a K2/100 but would need some guidance on the approach and details of assembling such a unit as well as modifying the software.


    1. Hi Gary, exactly, it is not a full kit, I can help you build the parts that I described on the website, but you need an Arduino Nano module and load firmware. Soldering and assembling all mechanical parts are required (not SMD). Soon I will upload more information on how to build your own amplifier to the website, I have a lot of fun but it takes all my free time. 73 KM3KM

  7. I seriously love your blog.. Excellent colors & theme.
    Did you create this site yourself? Please reply back as I’m
    trying to create my own personal website and would like to find
    out where you got this from or exactly what the theme is

    Keep up the good work!

    1. Hi Emanuel, I myself have created everything, if you need help I can share links and videos with you about it, thanks

  8. Hello Kenny. Nice Amp kit design. Have been following this for a while. Would appreciate it if you could send me info on the loaded / tested boards you supply as well as info on what other items I need. Are you using the W6PQL RF deck that uses the NXP BLF188XR? I watched the video of Carlos in Costa Rica. He commented the amp is SWR sensitive? I thought the NXP transistor was massively swr insensitive? Is there any issue using this amp with an auto tuner like the MFJ998? I have a SB200 that I did a Utube rebuild vid on about ten years ago. Works great but your amp kit integration looks awesome. TNX & Rgds, RG

    1. Hi Ralph, good question! I currently use the LDMOS MRF1K50H device. Yes, the LDMOS devices are very robust, they survive very high SWRs, but other components are not designed for this. The capacitors can explode and the toroidal cores will heat up to lose their native properties. Previously, the controller was configured to stop the amplifier when SWR> 2.0, that is, at 1200 watts there is a reflected power of 133 watts. Now change the protection concept for Mismatch antenna,now the controller constantly evaluates the reflected power, if it is> 125 watts REF Power the amplifier stops quickly. Therefore you can work antennas with SWR> 2.0 and work less power. Remember, if the antenna is in bad condition the SWR trips for a few milliseconds and will activate the protection, this can happen in any solid state amplifier with protections. Yes, you can use a tuner, but I recommend you; If you have antennas with SWR> 1.5 try to start with the antenna and then the amplifier, believe me you will have better results))). Thanks for being here .

      1. Thanks Kenny, Makes complete sense. I have my antenna pretty well tuned and plotted. Both are impressive devices. I spent 25 yrs in the semi biz. The NXP MRF 1K50H is also a beast of a part. NXP has committed to a minimum availability of 15 years for the device.That is a life time in the semi biz. I am interested in building one of these so please email me what you can. TNX RG

        1. Ralph, It takes a long time to manually build these modules. I have taken many weekends and free time for this project. I am building some Controller that will be available directly store of the page, many hams ask me for the controller. Then I will take a 2 month break, do you want to wait? .You can buy the W6PQL power unit and Low Pass Filter, I am sure they are very good, you can adapt the KM3KM Controller with W6PQL modules. Thank you

          1. Kenny, I am in no rush. Have been contemplating a solid state amp for years. What’s a few more months. Your design is awesome.
            Sounds like you need a pick and place machine, an IR reflow oven and 48 hour days.
            Please put me in the cue for a set of boards when you are going to start the next build.
            Let me know. Thanks for your effort.
            Rgds, RG

  9. Norm McCollough

    Hi Kenny
    Finished the amp parts assembly and had it on the air at 300w due to my tuner. I just got my 1.5kw antenna tuner and am running the LDMOS amp Now at 1kw. Many have commented on the high quality of the AMPLIFIER performance and sound on air. Lots have asked how difficult to build/assemble the parts. I tell them it is not that difficult and that I used very fine silver solder for connections. Worked very well. I really like this amp. 73s
    Best Regards

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