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Don, The shipping is itself working out to be 15 dollars from India (we haven't started stocking in the usa yet). So, we have put all the upgrade kits into one box and sent it to USA. They should

Once the regulator is in place, you won't blow the PA finals unless you run them on high swr for a long time.

Probably not.? The way the heat sink is fabricated, the transistor has just enough "leg length" to reach.? Adding a socket would elevate the relative mount which apart from some fancy leg bending

Stupid question, when I replace my finals, can I use a socket since it seems that we may br replacing these on a regualr basis? Any gotchas in doing so? 73 Lou KI5FTY wrote:

Hi Jerry, I installed the buck regulator board, replaced the finals and went through the DRIVE and PA bias adjustments.? I am back on the air! Heat sink is much cooler to the touch and no noticeable

sBitx number 55 is alive and well in Costa Rica. After setting Call and grid I moved on to setting Power to zero until the mod kit is installed. When I select WATTS and cursor down from my keyboard I

I agree whole heartedly with your comment. I am just going by the issues brought up with some other posts that were put on this group about core material, losses, eddy currents, etc. I have been a big

Hi, I have a uBITX V6 and agree with the comments. I used a spare Arduino Nano V3 so that I can keep the original as a reference. If you use a different Nano, make sure that the connectors are

The Pi4 needs 5.0v AT the USB-C port. The reason for the 5.25v power supplies was to allow for voltage drop in the wire between the power supply and the Pi. The CPU is a 3.3v part with a regulator to

Toroids and pitfalls? What were the problems?? Toroids for use in HF have been the standard for high performance vs size for a long time.? Are there suddenly problems?? The only problems I can

HF Signals said they would be delayed, as I recall Ken, N2VIP

Hello all, Has anyone received their Sbitx basic kit with the LM338 repaired with the new switching regulator yet? The reason why I ask is that I ordered my Sbitx basic kit on August 9th and it hasn't

Both IRFZ24Ns are shorted. I removed them an tested them with a multimeter as I did with the original pair that blew. I also tested the second pair before swapping them in. (I ordered a set of 10 on

Dear Barry, Very verry interesting.?? Sounds to me that coil form is a winner.?? Where did you buy the thread bobbins??? I am in the hunt.?? I am putting a test fixture together today so I can

Will there be any notification they've shipped, and by what method? Not wanting to create any additional work for the HF Signals team, just nice to be able to keep an eye out for the delivery,

BITX fans will like this blast from the past:? https://soldersmoke.blogspot.com/2022/08/soldersmokes-2006-interview-with-farhan.html

Opened it up - something was blown from the PCB... see pictures

I think the rpi and the display will be protected as they are on the otherside of linear regulators. I would begin by first removing the digital board, disconnecting the display and powering up. Is

Sbitx

Which radio are we talking about?