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Hi This is kind of an Ashhar question.... What's to become of all those fast-failing TDA2822 chips? Has the vendor offered any compensation?? The main reason I'm asking is -- I've been in a number

Hi All, attached is an updated user manual for the KD8CEC 1.061 firmware. The updates were to 1. incorporate feedback received on the manual, with some new ??? operating tips,and 2. enhance the

Lawrence, So happens I'have all the mobile manuals and the SSB for radio amateurs since they were printed... Yes its a good circuit, low noise and wide agc range.? HyCas is a variation of that as

The Greater Cincinnati Builders Group is actually doing our Pixie build on the 21st. I'll let the group know how it goes. Jack, W8TEE

I also agree that the Pixie is less than a CPO.? We have done this a couple times at schools we work with.? It's a lot of fun. Garry, AK4NA, is arranging 10 Pixies for the school he supports for

Just got my package? and so glad that the chip now has a socket

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Part 2

Ge evening Allison. I mentioned it because of the two fets used in cascade at the front end and the use of agc. It's design being nearly 50 years old is a totally different concept. As you said the

It might be the DDS/VFO board we did for the QST article (March, 2015) on the Forty-9er. The only touchy thing about the buck converter was the Phillips head screw that adjusts the voltage which was

More than one way to skin a cat! tim ab0wr "Kevin Luxford" <kbgluxford@...> wrote:

Satish and Allison: I'm using chinesium SMD 1206 capacitors. Re: the questions about insertion loss, I realize now that I had not accounted for loss in my cables, and perhaps I'm not appreciating

Michael, Yes, that curve with the transformers looks much better. I suspect mine does not look that good. Have not swept it yet. Please heed Allison's warning about sweep speed. Rod

Oh that is one sweet front panel! Roy WA0YMH

I really like the idea of using the RJ45 jack for the mic.? I finally ended up making mine pretty traditional looking.? I'm still going to add the USB panel connection so I can hook it up to the

Dave Understood.? My post was mostly to provide expanded info for general use.? Questions regarding rotary encoders tend to occur on a regular basis, mostly from new group members.?? Your method

I built and audio cable that swaps the tip and ring so I can keep the original uBiTX mic wiring when plugging in a Baofeng mic. Dan, W2DLC

Hello ARV I didn't didn't like the way that wires were soldered in directly onto the tiny pins so I made a board which takes much of the strain off of the encoder contacts. You may use it freely. I am

I'd presume Farhan reads here form time to time. The base design could with mods. It needs an RF amp(LNA) for RX as on 2M SSB work weak signals are the rule. This means getting the RX noise figure

One warning when measuring narrow filter use a very slow sweep.? At narrow resolutions if the sweep is too fast the curve will not match the actual.? It is as much detector response time as its