AMSAT Deutschland e.V. Forum

Hi Detlef,

the TEKO 392 from Reichelt was ok for the first Version of DXPatrol Upconverter:



"TEKO 392: Stahlblechgehäuse, 83 x 68 x 28 mm, silber"
https://www.reichelt.de/stahlb…p34031.html?&trstct=pos_0

73 de Robert - DL5GAC

Do you have a photo of your suspected joint? Input or output connector?

I'm using the MHL21336 without input and output caps.
I have a 6dB attenuator (smd resistors) at the input and made a small pcb using 0.85mm FR4. You will also need a heatsink.

DIY's third Helix antenna was tested tonight and can work in SSB mode.And make QSO with PA1EW and PA3FYM.PA3FYM gives the signal report of s58.Receive using websdr, websdr currently has many delays and pauses.Also used IS0GRB websdr page, almost the…

BG0AUB Hello Zhaofeng, the use of a conductive support, diameter < 0.1 wavelenght, INSIDE a helix is perfectly OK!. SWR may change a little bit, but will be good. The helix construction shown by G4SDG on the 1st picture in the other thread "DIY…

This article I published around 20 years ago.

Don't have it anymore (because the server -at that time- doesn't exist anymore) but somebody saved it for later use.

Coil is yellow in glass fiber board, used to keep the spiral shape
In order to make up for a lack of overall rigidity, fixed with a carbon fiber tube in the middle.
Now I have the carbon fiber tube and reflector and reliable connection (conductive…

(Quote from PA3FYM)

20 years ago,When I was 18 years old...

Hi,
my signal on QO-100 was a bit bad. Only 10-15 db above noise.
Ich checked the Dish and the Helix and optimised everything. Other stations told me that with 2W in a 80cm dish the signal has to be stronger.
Today i got a FLASH. My signal was 10 db…

Thought I should get the title correct at least.
F1FAQ that is interesting, there may be caps on the device, just does not show or give any suggestions by way of a development circuit or similar.