开云体育

Hi Greg The Irwell transceiver did start off with the intention of it becoming a kit however the project has taken me way longer to develop than I ever anticipated. So far I have the multi-mode

Are there any plans for Irwell to become a kit in any form ? gregW:-)? OH2FFY

Hello to all, letting you know Andy has downloaded 4 files about the latest project The Irwell Tcvr, Have a look, it is what we have been waiting for and there will be more to come hopefully asap 73

Hello Andy, Many thanks for postiing the 4 files and pic's for the latest Irwell tranceiver build (with more hopefully to come in the near future. I am sure they will be viewed by many members who are

Hi Andy, Jerry and the forum, Thanks for your suggestions to tame my G6LBQ transmitter instabilities.? I haven't had time until no to respond more than briefly. I found that the speaker-mic I was

Hi Paul Great to hear you have made progress with the instabilities. On looking back at the forum messages I gather that you have built the Linear amplifier with three RD16 mosfet devices ? If so

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* G6LBQ PCB for Digital Modes.pdf *Uploaded By:*

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* G6LBQ PCB for Cascode IF.pdf *Uploaded By:*

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* G6LBQ If Amp_AM Demod 2018.pdf *Uploaded By:*

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* Schematic Revision 1.0.pdf *Uploaded By:*

Andy, things have moved along, the problem I was having appears to have been due to using an unshielded speaker/mic, I've ditched that, added an inbuilt mic, added shielding, and set the mic amp gain

Hi Paul Can you try the following; Disable the final linear amplifier stages so that you only generate RF as far as Q13. Is the instability still present? 73 Andy

Hi Paul One quick question, are you sure that the carrier oscillator is aligned correctly, poor alignment and you may be experiencing some leakage. Did you match your crystals for the SSB filter

Hi Paul - I have no experience with the G6LBQ design but I lurk here occasionally to see what is going on. The issue you described is a frustrating one for sure. After reading about your experiences

Hi Paul, ? Maybe your problem is coming with high SWR or incorrect matched stages ? I had such problem in my project.? ? Regards George ? W dniu 2018-09-06 07:51:19 u?ytkownik Paul VK3HN

Thanks for the suggestion George.? Common base presents an ideal low input impedance which is desirable.? What I am doing here is reproducing the G6LBQ design, which I assume has been built hundreds

Hi Paul, ? Try to do something with common base for whole of RF stages. Sometimes it works. ? 73 George sp5rzm ? W dniu 2018-09-06 01:15:26 u?ytkownik Paul VK3HN <prt459@...>

Update on this scratch build -- the receiver is working well, I use it on 40m regularly.? But the transmitter is unstable. I've returned to it over the last few days to see if I can iron it out.?

This design is based on BiTx, bidirectional transceiver. The BPF is symmetrical.? It's in circuit in both tx and rx, depending on where the +12v is applied (rx stages or tx stages), kef tto right

it's same if U using 50 ohm antenna... U might experience re-adjusting BPF a little every time for best RX, if using variable length long wire, while calibrating... -- Please encourage