HF / UHF FM-Cross-Band-Repeater System
DMØSAX
SysOp: Rocco, DL1XM and Gunnar, DG1LZG
Status: 2010, June, 20th
Channel: RH1
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Tx-Site: |
29,660 MHz in JO61MC / Hartha |
| tx - output | 80watts |
| Antenna | 1/2 lambda GP modified |
| bandwith | 15 kHz, deviation 2,5 kHz |
| for UHF-access only Collmberg |
Tx-Site: 438,675 MHz in JO61MH (link between HF - UHF) |
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UHF-radioLink from Rx to Tx (23km) |
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| Rx-Site: |
29,560 MHz in JO61MH / Collmberg |
| rx - sensitivity | -127dBm |
| Antenna | 1/2 lambda GP modified |
| bandwith | 15 kHz, deviation 2,5 kHz |
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for UHF-access only Collmberg |
Rx-Site: 431,075 MHz in JO61MH / 67Hz (link between HF - UHF) |
The crossband 10m/70cm-crossband repeater DMØSAX is in Saxony, South-East Germany located.
See the red point on the picture below.
The distance between Rx and TX is rd abt.15miles Both locations are rd abt. 320m asl. For the link-connection between both sites a UHF-radio-link system is working. This ist the UHF-Repeater DBØSAX www.db0sax.ccx.de
There is a possibility for a local UHF access to the 10m repeater DMØSAX . The UHF repeater DBØSAX is direct connected to the 10m repeater DMØSAX Both repeater are progressing the same radio traffic.
Manual:
To open the HF-repeater, only a carrier on 29.560 Mhz for 200ms length is needed (negative flank control) To activate the UHF Site a permanent CTCSS subaudio tone of 67Hz is required.
The transmitting- and receiving-antenna are working in vertical polarisation. The repeater is working in narrow frequency modulation 10khz bandwith. A new control unit is installed in June 2010
10m Receiver with carrier control untit (Teletron TM8800 and control unit covered)
Link-Tx preamplifier and UHF repeater (Motorola MSF10000)
Modacom MSF10000 - main repeater |
Manual for adjustments and reconstraction Motorola MSF 10000 as UHF-Repeater by (c) Rocco, DL1XM
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Tx-antenna for 29.660mc (vertikal polarisation and optimized for 10m)
The first 10m repeater in East-Germany was born on 2005, April 24th
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Rx-antenna on the top of " Collmberg" |
Link-rx-antenna and 10m Tx antenna on TV-Tower in Hartha |
We are so thankful for your contribution and donation, because the repeater is equity financed by ourselve.
| Feldbergrelais DBØFT | www.db0ft.de |
| Fichtelbergrelais | www.dm0fi.ccx.de |
| DBØSAX | www.db0sax.ccx.de |
| Repeaterforum / Technik etc. NEU! | www.relais-forum.de |
Impressum:
Verantwortlich für diese Seiten: DL1XM & DG1LZG
email: dl1xm @ gmx punkt net
(c) DL1XM, April 2005
