logo
Most Viewed Last 7 Days
436MHz DATV Up-Converter (245)
Detecting a Pulsar at 1420MHz? (112)
Archive2 - DATV Transmitter (112)
146MHz RD06+RD15 Amp (105)
EME In 2006 (77)
ATV Contest 2006 (77)


Cluster Activity

Spots per uW band today:
UK spotter or spotted only.

Solar data:
SFI
70
A-Index
26
K-Index
2
Exp.K
0
Sunspots
12
Activity
qui
GMF
qui
Aurora?
no

My Weather

Date:16/01/18 Time:19:28
Temp:1C
Wind Speed:0mph
Wind Dir:225deg
Pressure:984.44mB
Humidity:118%
Dew Point:4.6C
UKHASnet
23cm In the beginning

For 23cm I started out with ATV Amateur Television with a 24 element JVL design Loop-yagi antenna made from copper brake pipe and aluminium U section about 2m long. This worked very well for Receiving ATV and has a reasonable amount of gain, but I managed to get hold of 2x28 element G3JVL yagis off-the internet on G3CWI site including a 1W ATV transmitter.
This was bought in dec 2003, the gear finally came in may 2004! The guy who I bought it off had some family problems and the gear was not one of his main priorities, all was ok in the end but I was about sick of waiting!.
Anyway, these antennas were phased together and improved the 23cm setup dramatically and with the transmitter I could join in with the other local stations finally.


Next on 23cm I bought a transverter from gm4wll, a kit made by DownEast Microwave in the USA.
Now I could then hear the GB3MLE beacon over 80km away at S7 all the time, wnith the old homebrew atenna it is only about S1.
Since then I have added a preamp on 23cm and switching relays at the top of the mast for tx/rx and replaced all the coax with mostly Andrews heliax LDF4-50 which reduced losses A LOT, this is the way to go with microwaves :)

The original Setup:

Setup Diagram









Last page added:07/01/18 10:15
M0DTS.co.uk