Interesting. How did you setup the solar powered repeater to be reliable? Any more suggestion on Repeater other than Motorola?
Thanks -----Original Message----- From: Eric Lemmon [mailto:[EMAIL PROTECTED] Sent: 05 Januari 2004 1:59 To: [email protected] Subject: Re: [Repeater-Builder] Building first repeater I strongly recommend that you proceed very cautiously along this path. Amateur-grade radios seldom have the quality, stability, and robust design needed in a repeater. The CTCSS tone encode deviation is frequently far too high, and is almost never adjustable. Every dual-band rig I have seen needed to be adjusted to bring the center frequency and deviation within the manufacturer's own specs, and some were very prone to drift. The ICOM IC-207H is a prime example of such a radio. Very few dual-band ham rigs with cross-band repeat capability have the proper filtering to keep the CTCSS tones out of the repeated audio. I would go with two back-to-back commercial radios and a RICK between them if I were interested in cross-band repeat capability. As I understand the FCC Rules, a cross-band radio (such as the Alinco DR-605T) should be used as a remote base by the owner only. To be legal as an open repeater, it must have a station identifier. Ideally, the radiation center of the antenna should be above any nearby obstructions. An omnidirectional antenna with modest gain (4 to 7 dBd) on the roof of the highest building will likely be a good performer. If your antenna location is not centered in the desired coverage area, consider a directional-pattern antenna such as a corner reflector, a low-gain Yagi, or an offset dipole. I suggest you consider a Motorola R1225 repeater, instead. The R1225 is available in 10 watt and 50 watt versions, is available in both VHF and UHF versions, includes station ID-er, hang timer, courtesy beep, timeout timer, TPL and DPL encode/decode, and is completely programmable. Even with the required HVN9054 software, it costs less than a roughly equivalent Hamtronics repeater, and is a far, far better radio. I have two R1225 repeaters in commercial service, and one in Amateur service on 2m. One of the former is a solar-powered UHF repeater that has been operating 24/7 on a mountain ridge for more than a year, without a problem. The R1225 is an economy low-tier repeater, but it has great value for the money. I have no financial interest in Motorola, I am simply a longtime user of their equipment and a very satisfied customer! 73, Eric Lemmon WB6FLY Rizky_p wrote: > > Hi, i am thinking of building repeater for cheap. > > Can a mobile radio with cross band repeating capability and with 50W of Tx power be used instead of using dedicated repeater controller? I am thinking of Yaesu FT8800R. How high should the tower be? I want the coverage at least 20-30 miles. The area here is perfectly flat with most building as high as 24 feet. (densely populated area mostly houses) Any advice? Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
