Hi

First of all thanks to the 20 members who responded to my email and confirmed their shipping location I will now email you with a cost to ship the PCB's you are interested in so expect an email from me within the next 24hrs.

I have not received an email response to confirm shipping location from the following group members:

socijalizam1@...

pd0sbc@...

vu3pyg@...

bakercrich@...

kon.stamou@...

It is important that the following members confirm their shipping location, by return email, once this is done I can confirm what the total cost would be to ship the PCB's you are interested in.

Regards

Andy de G6LBQ

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Hi Paulo

Thanks for pointing that out I will amend the schematic soon.

Regards

Andy de G6LBQ

Andy,

Sorry, correcting my previous post.?

There is only one 10nF capacitor on the schematic, but two on the board.

Regards,

Paulo

PU1PBE

Hi Andy,

I could observe that the schematic of the PA MK3 is not totally compatible with the pictures of the board with the components in place.

For example, on the board there are capacitors with 10nF and 100nF values, although in the schematic there are only 100nF capacitors.

Another thing, although you inform that all smd components are 1206 size, there are 100nF capacitors with different sizes.

I think that a list of the material with details of size, value, type and voltage would help a lot.

Regards,

Paulo

PU1PBE

Hi everyone

I have added a database in the Group where you can pre-register your interest for pre-order of the MK3 HF Linear Amplifier PCB.

PLEASE NOTE: ?If I have already reserved you a MK3 Linear Amp PCB from stock your name will be added to the database for information purpose so I can track interest..

Further details of the MK3 amplifier can be found in the files section in my G6LBQ Irwell Transceiver project folder.

All members who have registered there interest on the database will be contacted by email once there is sufficient interest to consider placing a manufacturing order for the PCB’s. In the email, I will confirm the PCB cost, shipping costs and you will have the opportunity to confirm your order.

Please note that any member who registers there interest on the database can remove themselves from the list should they wish to do so.

Regards

Andy de G6LBQ

Hi Paulo

Information on the MK3 HF Linear Amp can be found in the files section in my G6LBQ Irwell Transceiver ?folder.

Regards

Andy de G6LBQ

Hi Ken

Yes it is newer version than the MK2 original used with my SSB Multi-band project.

The MK3 was developed with the Irwell project in mind, its a smaller board and does not have a pre-driver stage prior to the finals. ?When I produced the MK2 HF Amp it was universal and could be used with a standard BitX or other transmitter with only a few mW output. The MK2 Exciter produces several hundred mW of RF so in essence the pre-driver stage in the MK2 linear was overkill and required attenuation at its input to reduce (waste) rf energy.

Hope that answers your question.

Regards

Andy de G6LBQ

Hi Ian

You are on my list for a MK3 Linear PCB.

Regards the Irwell Transceiver project there is a folder in the Group files section which has some limited information but it has not been updated for some time as I had to shelve the project to deal with other priorities.

The end goal for the Irwell project is to have a homebrew transceiver that covers all HF bands, has general receive coverage and multi-mode operation. So far I am able to confirm that the following modes will be supported - USB, LSB, CW, AM and Digi-Modes. ?I would also like to include FM mode but this requires some experimentation, the receive part is straight forward enough but the transmit is a little more difficult to achieve.

The Irwell project is very much a personal challenge but one I will share with the Group and hopefully it will attract enough interest to warrant making PCB's available and maybe a few kits.

Work has begun again on the Irwell and I will provide more information as I make progress and the project evolves.

Regards

Andy de G6LBQ

开云体育

Hi Andy

Where I can find the documentation for the MK3 PA?

I've found only for the MK2.

Regards,

Paulo

PU1PBE

Hi Everyone

Just a quick post to update everyone who is interested in PCB's for the transceiver project.

The databases that I created in the Group for pre-registering an interest for MK2 BPF and MK2 Exciter PCB's has gone well so thank-you to everyone who has put themselves on the lists.

With sufficient interest I can now warrant making inquiries with PCB vendors to get an idea of cost, once I have done this I will email everyone who has registered their interest with cost details.

If you have shown an interest to get PCB's but have not registered on the Group databases please register as soon as possible. ?The databases can be accessed from the Groups.io menu list present on the left hand side of your screen!

I will be adding more pre-registration database soon for further PCB's so please keep an eye on the Group Database section.

Regards

Andy de G6LBQ

Hi Kon

I have reserved 1 of the MK3 PA boards from my stock and will email soon to confirm cost along with the other boards as per the databases entries.

Regards

Andy de G6LBQ

Hi Paulo

I have reserved 1 of the MK3 PA boards from my stock and will email soon to confirm cost along with the other boards as per the databases entries.

Regards

Andy de G6LBQ