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Same here..and of course I'm back traveling for an extended period starting next week, so its even more torturous that its not here by the weekend so I can at least takea peek. DHL has surprised me

"Many recommend tuning at a lower power. This risky as well. That is because at lower power, the output impedance of the PA will be different. Once you are tuned at QRP level, increasing the power

Go retro and make a collage of the old logos from the past... Collins, Drake, Harmmarlaud, Hallicrafters, etc... be sure to add the builders kits like Heathkit and Eico

You can also get some TO-220 non-inductive resistors of a suitable wattage, and mount those to the heatsink. 10-watt devices should be OK, and 50 ohms is close enough. Those devices aren't cheap, but

You can control it in software, much simpler! The main reason for not putting in an RF sensor is that raspberry pi doesnt have an ADC

decorations: speaking of star war and star trek.... how about a layout of our solar system some where on the radio? Alan w7aln wrote:

I'm wondering if we could add an SWR bridge and use the reverse sense voltage to automatically fold back the RF power? Perhaps control the gain of Q11 to accomplish this? (I have an sBitx on order...)

?Scott, where did you get three legs? If all the resistors are parallel there will be only two legs. Connect one to the ground of your transmitter and one to the antenna pin in your output

Scot, You have to build a resistive bridge like this : https://images.app.goo.gl/bDNm9j1Gasjwa2hR8 Here, each of the 50 ohm resistors should be able to dissipate 10 watts. So, you make a 10 watt

Hi Ashhar, I’m a bit confused. ?I get paralleling ten 470 ohm resistors but I’m am uncertain how to use it. ?How do you connect this arrangement (three legs) to protect the finals? ?Is it in

I understand the need for a low pass filter. That is needed for the IC 7300 also which I built a low pass filter for it which was easy enough. It produces real nice harmonic spurs right through the AM

I received notification from DHL today with delivery scheduled for Monday (not bad since I am in Ireland) , obviously the basic kit has started to ship, will look forward to much experimenting with

The potentiometers has minimum at the "right" place. Lowest at anticlockwise position and max at clockwise position. Just like a volume pot. oz9ny, niels

Many recommend tuning at a lower power. This risky as well. That is because at lower power, the output impedance of the PA will be different. Once you are tuned at QRP level, increasing the power will

Unfortunatel, no. The sbitx has no way to check the swr (yet). Even if it had, as we are dealing with very high power, fiddling with the tuner for 15-20 seconds with large mismatch will send all the

In the operating manual I see the following warning: ``` # 1. Connect the Antenna first! The antenna jack on the back must always be connected to a properly matched antenna with an SWR of less than 2

I was very excited to discover that my sBitx (serial #0013) was delivered a day earlier than expected. I've been excited about this radio for the last six months, so I'm very glad to have it in my

My $0.02 are to make the monitor case a cube with a beveled sloping front as to make it easier to view the monitor when they are on a table top. decorations: star wars or Star Trek spaceships !

I have thought about that and I think that it is a good idea but it is outside of my skill set. I guess I'm going to let the kinks of the sBITX and then try to acquire one -- '72 Aaron K5ATG

It is tough and frustrating to be an "early adopter". I thank you all for taking the plunge, Respect!