HAM radio Repeaters

I produced   two HAM radio repeaters for the Ostrava HAMs.They are OK0AD (on the 2 meter band) and OK0BD (on the 70 cm band). The reapeaters are project for the Ostrava City and  the neighbourhood.

The OK0AD is lokated at the OK2KOS Radio Club cca 200 m from  Technical University of Ostrava (ALT 300m) and  he works on the frequency 145.600/145.000 MHz. The OK0AD was reconstruction recently. The rekonstruction maked OK2UWV and OK2VLT (repeater technology) and OK2UFY and OK2BMU (antenna and duplexer).

The  OK0BD repeater works on the frequency 438.650 / 431.050 MHz and he is lokated at the  Klimkovice - Hýlov (spa town near the Ostrava - ALT 354 m, LOC JN99BT). OK0BD has the  dual SQL with CTCSS frequency 82.5 Hz. The output power is 10W ERP. The OK0BD signal cover the Ostrava not only but via OK0BD it can be works from Lipnik to  Bielsko - Biala at the Poland. The picture shows the technology OK0BD.  The firm B PLUS TV a.s. sponzored material for construction this repeater. Here you can see the repeaters technic specifications. 

Assembly the antenna system OK0AD on the roof  the Technical University of Ostrava. OK2UFY (left), OK2YP (right).

On this picture you can see the new reapeter OK0AD in the old case and a duplexer on the shelf.

Next photo from installation a new OK0AD.

(click for expansion)

The last adjustment the antenna OK0AD before elevate	OK2YP fixing the coax cable from antenna OK0AD	The panorama a antenna system OK0AD	Detail view of duplexer OK0AD	Jenda OK2UFY makes measuring  the antenna system  before connect on the OK0AD
Detailní view on the  Site Master	The control a  duplexer before connect to OK0AD	Measuring the  duplexer  (right Ivan OK2BMU)	View from the  QTH OK0AD to Ostrava City. The top building to the fore is  QTH the Club station OK2KOS	The next view to Ostrava City.