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Search results

  1. Unit 148

    Rocketbox info thread !!! Made in the USA with a reasonable pricetag !

    Commando, If you have the schematic with p/n's for the fet box I'd appreciate a copy? I'm competent with a solder station but am not a component level design engineer. Dave 148
  2. Unit 148

    Thumper 800LD

    I'm not sure. Here are the plastics sold by and used in his amplifiers> https://rocketboxelectronics.com/shop/ols/categories/transistors
  3. Unit 148

    Thumper 800LD

    Is anyone running one of these amplifiers and how reliable is it; Can anyone point me to a seller as I cannot find anything on Facebook or Google? Unit 148
  4. Unit 148

    Base Interceptor 10K Antenna

    Xforces Base Antennas page comes up with: https://www.3dcartstores.com/. Seems like their site has issues. Jay, are you out there? Unit 148
  5. Unit 148

    Base Interceptor 10K Antenna

    Thanks guys, Marconi, I was in touch with Lee a couple of exchanges of messages but comm's broke down even though I could suggested after my funds clear I can arrange courier pickup.
  6. Unit 148

    Base Interceptor 10K Antenna

    I was told recently that Jay is going back into production of a revised I10K but have heard nothing. Anyone know anything?
  7. Unit 148

    Amp recommendations/ box builders

    Tokin, What do you consider is missing from LDMOS designs?
  8. Unit 148

    5kW Mobile tube or solid-state?

    I'm inclined to think that either 50V LDMOS or a tube is the way to go and not 12V or volting them higher that 14 for long term reliability and reasonable IMD numbers. Nomad, there is a faily big difference between average and peak power draw and with a brace of decent AGM or Lithiums and a...
  9. Unit 148

    5kW Mobile tube or solid-state?

    Thanks for all the feedback. It is interesting to reach that power level in a mobile daily driver rather than just made for shootouts. Out of interest who other than Dahl produced transformers for tube mobiles? Unit 148
  10. Unit 148

    5kW Mobile tube or solid-state?

    OK on those 65V LDMOS. You say there are 4 device bare boards available - with a schematic or and parts list? I have only seen single and dual 65V LDMOS builds out there from RF Man: https://www.youtube.com/channel/UC7r5QeuynhXudskQDl7J45w/videos and...
  11. Unit 148

    5kW Mobile tube or solid-state?

    Thanks for your thoughts. Regarding drive. Yes, that is an issue. I do wonder how much drive one would need in a non-competition amp for a tube like the 3CX3000 which I believe is fairly popular at this power level? My only concern with a solid-state amplifier that can run this power reliably...
  12. Unit 148

    5kW Mobile tube or solid-state?

    I currently run an old 8 x Toshiba 2879 mobile amplifier which will be shortly going to a new home. I would like to step up to the next level in mobile power. Mobile power supply is not a problem as can add alternators and or batteries as required. I operate mainly on sideband so will use an...
  13. Unit 148

    Who makes this mobile antenna?

    3:50 into this video on the yellow wagon; Thanks Unit 148
  14. Unit 148

    Varmint schematic

    Thanks TM. I had found the CBT site schematics but they only have the base amp's and a mobile I have has been butchered around the inverter so those schematics are no great help. Unit 148
  15. Unit 148

    Varmint schematic

    Would anyone have a Varmint XL-310/75 mobile amp schematic they could send me? Unit 148
  16. Unit 148

    Interceptor 10K

    I take it the Shockwave came out some time after Jay's originals? Is there any physical or performance difference between the two? I see the Zero Five antenna. I have only ever imported a horizontal HF dipole from Zero Five and that was many years ago. How does their 5/8 wave GP compare to...
  17. Unit 148

    Mobile Which mobile vehicle model here performs the best?

    Hi Marconi, It was many years back but let me give you some background info. Scroll down the images to the one titled Woburn 1997: https://www.qsl.net/g3tso/Top Band.html You can see me far left (ham call G4ZOW) holding my mono-band 160m (1.8-2MHz) Texas Bugcatcher antenna (lower section as...
  18. Unit 148

    Interceptor 10K

    131, I do not know Chris. Does he have a website? Unit 148
  19. Unit 148

    Interceptor 10K

    Jeff, Have you had the opportunity to contact Lee to see if he has a NOS Jay built I-10K or I-25K? Thanks. Unit 148
  20. Unit 148

    Mobile Which mobile vehicle model here performs the best?

    My 2c, In my experimenting the vehicle with the largest chassis produces a stronger field strength as measured with a remotely mounted spectrum analyzer. It is obvious why. Have confirmed this with duplicate RF chains (monoband Texas Bugcatchers and SGC Cube linear) on both 11 and 160m. Unit...