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According to the reviews, you also have to get your own schematic. And measure part values, as the caps are not identified. Glad it worked for you, but this might not be a good option for many. In my

BPF would be a strong guarantee no overloading would be heard in the receiver (except for strong signals within the bandpass). Others have pointed out that brand transceivers have BPF in the TX chain.

I built one of the cheap linear amplifiers from eBay.? Under $20 gets you 70 watts.? You have to get your own case and heat sink and filter the output.?? Since I only use 20 meters I put a single

Thanks everyone for the opinions! I am going to skip the Tx/Rx light since it is displayed on the nextion (totally forgot about that) What are everyone's thoughts on a good LPF kit?? I have looked

Dear OMs, Let me know from where you guys are buying Nextion Display? I'm looking for a reliable seller, you might have experienced I recently brought from AliExpress but received a damaged piece.

I don't think a RX preamp is really needed. - 107dbm signal is clearly audible. However some 'digital hash' or artifacts could be buried by noise floor and this would be good. Being without BPF It

@Snowist: I tried powering up from the Samsung mobile charger 5V, 1A. Behavior is same. Yes, I also think that LCD may be defective. Thank you for your suggestion. Regards & Many 73s Dileep VU2DLE

I had the same issue, however on 20m. Traced it to rf riding the coax braid back from an off center fed dipole (MFJ-2010). Solved it by grounding the shield before the radio, and placing a ferrite

Dennis Yancey ( /g/BITX20/profile/406210 ) 4:22am???#62129??( /g/BITX20/message/62129 ) I have a v4 uBitx. I just installed the SM2166 mic preamplier per

This test is NOT on a BITX board, the loss at 45MHz and 90MHz is a points for comparison of both components. This was done on a test jig I made with 2 BNCs and hooked to a SA.

Jerry, Any one wont do Jerry! has to be a shielded variety with about 2 ohms DC resistance. Changing the relays KT1/2/3 to Axicon (thanks to Mike Doty) results in reduced harmonics which reduces

https://soldersmoke.blogspot.com/2018/11/totally-absurd-farhan-being-questioned.html

A preamp can help on RX. But I suggest having a gain control. Start with a good antenna first. For the RX/TX LEDs, I have some RGBs that I will use the red and green. Have not figured out a use

Hi Just checking out the new test Front panel & test bezel for the 2.8 inch TFT display best 73 Pop VU2POP

In files section here you can find correct sized files for your lcd

Try to power Nextion from somewhere else, power bank, etc to monitor its behavior. If something happens you can focus on LCD as it may be defective

When you press the Key the display shows that you are transmitting and you hear the relay click.? In my ubitx I have a built in sound card with a usb cable for sound control. I have a dpdt switch

I have just opened a new Shop and will be selling my kits and other goodies via the site from now on. Keeping track by hand via spread sheet was getting a bit much. More zero beat kits are coming and

You might want to do some reading here or over at http://ubitx.net/ about spurs and harmonics before you start thinking about amplifiers.? When you go from a whisper to a shout small problems can

If you are going to go with the nextion the TR/RX light would be redundant. The Nextion display has a button/label that changes colors from green to red. -- N5KBP