Search found 5 matches

by DJ5RE
02 Jan 2021, 08:29
Forum: Building MK-VII a.k.a. Paraset
Topic: Dc-dc 45-390v psu?
Replies: 4
Views: 22334

Re: Dc-dc 45-390v psu?

Hi everybody, I had this 70W modules in focus for a while. The first test showed, that the massive changes in load using morse code is not good for them. They are very stable, nearly no voltage drop, but regulation is too slow. I got often unproper oscillation when pressing the key. Now I added a Pi...
by DJ5RE
16 Feb 2020, 11:10
Forum: Building MK-VII a.k.a. Paraset
Topic: Dc-dc 45-390v psu?
Replies: 4
Views: 22334

Re: Dc-dc 45-390v psu?

If you plan to use those fixed value modules be sure they are "isolated". I use 1W Modules, 12V to 24V in my Mk XXI. The current is limited to 42mA. See www.qrz.com/db/dj5re and scroll down to see the MK XXI. With 6x 24V I run the transmitter.... If you choose 12V/12V versions, the current...
by DJ5RE
16 Feb 2020, 11:02
Forum: Building MK-VII a.k.a. Paraset
Topic: MkXXI Mk21: Looking for schematics
Replies: 3
Views: 21468

Re: MkXXI Mk21: Looking for schematics

Not so far. Contacted one museum in Norway, but they will not open the box. I made it as close as possible to the original, using the nice pictures I got from Norway. It works fine....but I can't prove I use 100% the original schematic.
See www.qrz.com/db/dj5re to see the finished set!
by DJ5RE
03 Oct 2019, 15:36
Forum: Building MK-VII a.k.a. Paraset
Topic: New forum....Thanks to Henk!
Replies: 1
Views: 9177

New forum....Thanks to Henk!

Hi Henk, I want to thank you for this forum. The old paraset forum is really missing!
I hope we get traffic soon! All my radios are no more on my personal homepage.
I put them on www.qrz.com/db/dj5re

Tom, DJ5RE
by DJ5RE
07 Nov 2018, 17:21
Forum: Building MK-VII a.k.a. Paraset
Topic: MkXXI Mk21: Looking for schematics
Replies: 3
Views: 21468

MkXXI Mk21: Looking for schematics

Hi everybody!

I found the knobs to post messages. Thanks Henk! Anybody has an idea how to get the schematics of the English MkXXI, both transmitter and receiver wanted!
Thanks for any help!

Tom, DJ5RE