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I've been thinking of taking AA7EE's approach at using NM0S's HiPerMite as the audio chain. I don't fully understand his use of a tuned BPF, my lack of experience is showing here. AA7EE Rugster:

I used a 7.16 mHz ceramic resonator with great success. http://www.learnmorsecode.com/DC/index.html I had those resonators left over from the VK3YE regen projects.

JT, This is exactly how I used my old Ramsey kit back in the early '90s.? Had it next to my bed. It was the same NE602/LM386 design. An LC osc using the NE602 internal should work fine. A varicap

I like the receiver section of the SST xcvr for an application like this. It even has a simple AGC that works pretty well. You will probably need another stage of audio amplification if you want to

Dave has posted on the CWTD Group his thoughts on using a DC Receiver with the Phaser Transceiver: "We considered interoperability between Phaser users to be an important design goal.?? That drove

Hi Bill, CW only. I just want something to monitor 7030 and 7040 while I am smoking a pipe and reading in my single room cabin or drifting off to sleep. 73

Hi JT, What modes do you have in mind? CW and most of the digital modes are not particularly fussy about a little drift. A free running, L-C VFO should give you what you *need*. The ones I have that

Hi folks, I'd like to build a simple NE612/LM386 receiver to cover from roughly 7.028 to 7.042. I'm wondering what I should use for the oscillator. I've been poking around on google but it is making

From old mobile phones, I've saved several sizes of various AHr capacity cells. If you don't have a way to make compression contact to the terminals on the top, you can solder to them. The terminals

Very similar to the PSKs. When I first worked JT65, I considered converting my PSK-20 to JT65. In the end, I couldn't bear to cut up such neat little rig. I'm glad I didn't. JT modes remind me of

Thanks Ryan, I missed your write up. I'm hoping it will not be too difficult to modify one for 160M.

I wrote this transceiver up on my website if anyone cares for an analysis: https://miscdotgeek.com/the-phaser-a-digital-only-qrp-radio-kit/ TL;DR: It's SSB transmit, DSB receive. -- Ryan Flowers W7RLF

Just like the Warbler and PSK series of days long ago, K1SWL has done it again by teaming up with N2APB to produce a phasing SSB QRP transceiver for FT8 and other digital modes. With two frequencies

Easy enough. Let's expand that range to all values from 0.0000001 F to 100000 pF. What more could you want?? ?;-) Jerry, KE7ER

Heh yeah, they are just listing then numerically rather than by capacitance. Kind of silly, but there's a good variance in the capacitors themselves. Ryan Flowers

I got an email from Amazon a couple days ago offering a capacitor assortment from 0.1 uF to 100 nF. Could we expand that range a little? 73- Nick, WA5BDU [email protected]> wrote:

Thanks everyone for the awesome replies. I decided to go halfway with this. I ordered the cheap kit, knowing that NP0 isn't needed for anything that RF circuits. I usually use QRP Labs kits for those

http://vakits.com/ceramic-capacitor-kit-50-values

The Si5344 apparently does not support programmable phase shifts. Jerry

Hans, So the VCO in the Si5351 seems to work from roughly 200 mhz to 1200 mhz. The max is 6 times the min, absolutely amazing! I had assumed the VCO was a straight up analog oscillator using a