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I meant stock.? I went back and fired it up.? It went from a few below 7.05 - 7.5Mhz.? Which makes sense.? That was with Raduino V1.01.? Getting ready to load a newer version.?? Thanks 73,

Needing help from all! Attached as a .PDF and LibreOffice Spreadsheet. Please provide input!! Goal is to make it into a club project, simplified as much as possible. Thanks, Bo W4GHV since '54

Yup, I skipped 17m. Also 30m and 60m. Those smaller WARC bands are supported, go for it! Jerry

Hi Terry, The new group has already formed. If you haven't already signed on it's on grups.io. Login and search for HBTE. 73, Bill KU8H

Sure, lots of ways to build an amp. The DSW-II with the LT1252 was a CW transceiver, that attachment is not a recipe for a linear amp.? If starting with what's on the uBitx and wishing to bring gain

Hi Jerry, I think you omitted 17 meters in that lineup. I am using external filters for CW on those bands and keeping it under 10 watts. 73, Bill KU8H

Simple answere is NO .? But there are advantages as per below. 1.The Pinning on RD devices is GSD with device flat on its back. ( that means inter alia the final transformer has be direct wired to

It has all been done before over 20 years back.? LT1252. It has essentially infinite input impedance. In this cct it is providing 5K input Z to the wiper of the potentiometer.? This chip can produce

The "bias-t" network shown in fig 2 of the datasheet on page 6 of the BGA616 is just an inductor up to the dc supply resistor plus a series cap to the following stage: ?

Max supply voltage on an MMIC is a function of the supply resistor you choose. Only the output pin itself is limited to 4.5v absolute max for supply voltage with respect to ground, and that does not

the temperatures taken with a sensor probe that sits on the heat sink of that transistor inside the enclosure closed up, and I would never take it outside. I do all of my radio stuff in the house.

If they're similar to MARS MMIC, input and output MUST be 50 ohms. 73 Ken VA3ABN wrote:

WARNING: Max Vd on that part is 4.5VDC !!! Sent: Tuesday, August 21, 2018 2:30 PM To: [email protected] Subject: Re: [BITX20] Wow... 15 volts in and a bunch out.. So I read the BGA616. $1.50 from

So I read the BGA616. $1.50 from Digikey https://www.digikey.com/product-detail/en/infineon-technologies/BGA616H6327XTSA1/BGA616H6327XTSA1CT-ND/2410159? I see you provide a 33 ohm collector load

Oh, I haven't done it. Just kibitzing. It could be another npn gain stage, just that an mmic involves fewer parts, so easier to patch in ugly-style on the bottom ground plane. An example might be U2

Can the RD16HHF1 be used as a drop in replacement for the 510 or will these mods have to be made? Just looking to get my uBitx back on the air. Seems like a good idea to place these in the finals to

Hi Jerry, can you produce a schematic with parts numbers on exactly how to do that? I’ve never used one of those components before. It should be easy to reduce gain in previous day just by simply

My 2-cents worth, homebrewtestequipment, homebrew test equipment, or DIYtestequipment? My first choice when using a search engine is the four words home brew test equipment or three words if you

An MMIC between Q90 and RV1 is an easy way to add an extra stage. ?/g/BITX20/message/51211 Of course, you still have to adjust the other stages to distribute the gain properly.

Thanks Darren - works great. 73, Bill