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ABOUT THE REPEATEROur repeater is located in town of Quartzsite in La Paz County, Arizona. It is an open repeater which means that anyone that can reach it is free to use it. It is not very heavily used but there is usually someone listening. The repeater coverage is quite good, and covers a fair portion of the area. On this page you can read our Repeater Description, User Guidelines, and some repeater use Tips from the ARRL.
Many thanks to Elmer, KC7BUC, and his family for hosting and maintaining the Quartzsite radio repeater for so many years. The repeater radiates through a vertical, monoband, Cushcraft antenna system.
It is a high-gain antenna system with low wind load and high mechanical integrity. It has heavy wall tubing, decoupling radials to eliminate feedline radiation, and is designed for all-weather performance.
The antenna system interfaces with our duplexer which is made up of a series of resonant cavity filters and is used to provide the necessary isolation between the transmitter and the receiver when a common aerial system is used. At present our repeater has a four-cavity duplexer.
The duplexer and antenna system is driven by a Hamtronics REP-200 repeater.
The REP-200 Repeater consists of a receiver, exciter, power amplifier, and a COR-5 computerized controller module, which is a combination of a cor, cwid, autopatch, and dtmf decoder. The transmitter and receiver modules are enclosed in rf-tight enclosures to prevent desense.
Connections for dc power, telephone line, monitor speaker, auxiliary receiver, and alarm circuit are made using push-on terminals on the controller board. In addition, two solder pads are provided for control of accessories, such as sub-audible tone decoder which are mounted in the repeater or even control of external devices.
The repeater is rack mountable, it puts out 20 watts, has autopatch, touch tone control for owner changes, external speaker connection for receiver, and separate connection for exciter for a different power amp than one built in.
The system is power by an RS-20M fixed voltage DC Power Supply producing +13.8 Vdc at 16 Amps. The RS-20M features crowbar over-voltage protection and foldback current limiting. Two analog panel meters provide simultaneous monitoring of voltage and current. Power connections are via rear panel studs, washers, and nuts. The RS-20M also manages the charging of our repeaters battery backup system and other 12 Vdc equipment.
Here are a few additional pictures of the Quartzsite Ham Radio Net repeater hosted. Click for larger image.
The Quartzsite Repeater coordinators offer this set of guidelines for use of the repeater. These are not intended to unreasonably restrict your operation, but rather to help ensure a pleasant operating environment is maintained for all.
1. During times of peak use and inclement weather, please keep transmissions short on the repeater and pause long enough between them to allow emergency traffic to break in. If possible, use a simplex frequency rather than the repeater.
2. Please be courteous in your use of the repeater. Keep conversations to a length that will allow others to enjoy the machine too. Do not break into a QSO unless you are certain you will be welcomed and you have something to add to the conversation.
3. Please use common sense and good taste during QSOs. Do not use profanity or make suggestive or off-color remarks or jokes. Likewise, conversations of a very trivial, personal, critical, or negative nature are inappropriate. Remember that many individuals—including non-hams—may be listening, so please do your part to leave a good impression of the Amateur Service and the Quartzsite Radio Net with our audience.
4. Please keep testing on the repeater frequency to a minimum. If you must test on the machine, be certain to identify legally.
5. Exchange of formal messages on the repeater is acceptable and encouraged. On the other hand, one-way traffic (i.e., repeater to simplex) is discouraged because it needlessly ties up the machine. Remember, one way repeater messages (from one station to a non-responding or unlicensed station) are illegal. Simplex operation on the repeater output frequency should also be avoided since it prevents others from using the machine.
6. Visitors are welcome on the repeater. Please assist any visiting amateur who requests help.
7. The repeater has a timeout circuit that automatically shut the transmitters down in the event there is a steady carrier on the input frequency for longer than <insert minutes here> minutes. To reset the timer, it is only necessary to release your microphone button for an instant. You don’t have to let the repeater transmitter drop.
8. Please identify clearly at the beginning and end of each conversation, as well as every 10 minutes during the conversation if it exceeds 10 minutes in length. If breaks between exchanges exceed a minute in length, please treat the next transmission as the beginning of a new conversation (i.e., identify). These guidelines differ somewhat from FCC identification requirements, but work well for our users.
9. The repeater transmitter delays one-half second before coming up when a signal breaks the squelch of the repeater receiver. This reduces random key-ups, but may also result in the first syllable or two being cut off of your transmission if you key your transmitter and talk immediately. To avoid this, key up and wait an instant before you talk.
10. The repeater may be used for events or other special communication needs. This should be arranged in advance with one of the repeater coordinators.
Please read the following Repeater Tips from the ARRL. They offer other suggestions for proper and courteous repeater operation.
DOs• Do keep all transmissions short. Emergencies don’t wait for monologues to be finished. If you want to hear your own voice, what you want is a tape recorder, not an FM rig.
• Do think before you transmit. If you can’t think of anything worth saying, don’t say anything.
• Do be courteous. A repeater is like a telephone party line, and requires the same kind of cooperation in its use.
• Do pause a couple of seconds between exchanges. Someone with a high priority need for the repeater may want to break in.
• Do use simplex whenever possible. Leave the repeaters available for those who need them.
• Do support your local repeater club. Maintaining a good machine is an expensive and time-consuming undertaking, and you should do your share.
DON’Ts• Don’t monopolize a repeater. The best repeater users are the ones who do a lot of listening, and little transmitting.
• Don’t forget that what you say over a repeater can be heard over thousands of square miles — by anyone with an inexpensive scanner or public service band monitor. These people are potential hams; if they like what they hear on the air, they will want to get licenses and join us. Don’t leave them with a bad impression of our hobby by making thoughtless or off-color remarks.
• Don’t break into a contact unless you have something to add and you’re sure you’ll be welcomed. Interrupting is no more polite on the air than it is in person.
• Don’t try to prove what a great operator you are by criticizing the operating techniques of others on the air. Instead, set an example that others will be proud to follow.
• Don’t forget that amateur radio is allocated frequencies because it is a service, not just a hobby. Don’t neglect the public service aspects of VHF/UHF FM communication, such as accident reporting, emergency preparedness, etc.
• Don’t abuse autopatch privileges. Business messages are not permitted in the Amateur Service. Don’t force a control operator to terminate your call in order to avoid a rules violation.
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