[Repeater-Builder] Re: Anyone have this happen?
--- In Repeater-Builder@yahoogroups.com, twoway_tech jcar...@... wrote: Hello, Hello I have a Micor UHF repeater station on amateur. I have had it tuned and tested perfect since last fall. I sent my elements to Bomar and had them temperature compensated and all that good stuff. After the repeater has set out in the garage all winter, (unheated, in Indiana) I powered it up today to find that the transmitter didn't appear to be working. After some tests I found that the element was off frequency. I tuned back to frequency and tested. It stayed on frequency for about 2 minutes and then drifted off about 40 Kc. From that point on it would not tune up. I installed the crystal in another element and it tuned right up and stayed that way for the hour that I left it running before I had to leave. I am wondering if it was as simple as the element being bad or maybe something else going on. If it is just the element, I wonder why it just decided to take a dump??? Any thoughts? Thanks -Jordan Quartz is an inorganic compound, as it contains no carbon atoms.
[Repeater-Builder] Hustler G6 440mhz
We are considering replacing a damaged antenna on a 440 machine. Anyone have any comments on using a Hustler G6. The antenna will be exposed to normal weather conditions for the northeast.( wind ice...etc..) Jim
[Repeater-Builder] Radio coverage prediction software
Has anyone ever used this website for predicting repeater coverage? I'm not sure what the dBuV/m values for the coverage display should be. Any suggestions? Thanks, Jim
[Repeater-Builder] oops forgot to attach the website
http://lrcov.crc.ca/cov.php?lang=en
[Repeater-Builder] Re: Receiver overload
David, I had a similar problem with a 2 meter repeater at a high power FM site. When the FM broadcast transmitter was down the front end overload of my receiver (GE mastrII) went away. In my case it turned out to be RF from the FM transmitter floating on the AC power lines and making its way into my repeaters receiver. I added an AC line filter and a LC filter to the 12VDC line and my problem was cured. Perhaps you could try running your receiver on a battery to isolate it from the AC line. Jim KC3LW --- In Repeater-Builder@yahoogroups.com, David Epley [EMAIL PROTECTED] wrote: I have a repeater receiver overload problem I am trying to cure. The repeater is a 900mhz 927.7125/902.7125. There is an FM broadcast station 100 yards away 104.9mhz. The repeater works fine at another site. My transmitter is a Motorola Purc 5000 running 75 watts the receiver is a converted maxtrac 800mhz radio. Duplexers are Telwave BpBr 4 cavity. I have 10 to 12 db degradation when plugged into 3 different antennas on the tower. When I use a 900mhz dish antenna pointed away from broadcast tower I only have 3 db degradation. I have tried 3 different maxtrac receivers, added 2 more BpBr cavities in the receiver side and used 3 pole filters in the receivers with no improvement. Today I looked at the signal level getting to the receiver at 104.9. To my surprise I was getting -8 dbm at the receiver. I believe this level is overloading the front end of my repeater. I was wondering if a stub cut for the broadcast frequency would work. Any thoughts would be greatly appreciated. David Epley, N9CZV Winchester, Indiana
