Thanks for all of the comments (well most of them except one). I have run my 220 machines w/o P/L up until the recent past. Never had one that really wanted or needed PL, as in the late 70's when the first one came on, the 220 band was occupied in the DFW area by only a dozen or so repeaters. There are fewer now and only 2 or 3 that really are active (one is linked to a wide area linked repeater system, so it looks active but it is not really as a repeater). I have been on a tower for all these years that has had (or have) multiple high power pagers (VHF and UHF), high power High Band radios and then 800 and 900 MHZ stuff was added also along with a number of point to point microwave transceivers. Of course, our 2 meter, 220 and 440 have been there all along with a new 900 machine last year. You would think we would have heard stuff at this high of a perch, but rarely did I hear the 220 (before PL) kerchunk with a noise burst.
I just thought it was strange that after the many years of monitoring the 224.18 output mobile, it is lately (6 months) that I have been hearing the signals on frequency. I have driven the same route for over 25 years to the job (BTW, yesterday was my last official day at TI/Raytheon after 41 years), so I had a pretty good record of listening on the band a few hours of the day most days of the week. It will be interesting when I find one what it is. I have one picked out that seems fairly strong and is in an area I can snoop around w/o/o being asked too many questions on what I am doing. Roger W5RD ----- Original Message ----- From: Bil Seymour To: [email protected] Sent: Tuesday, January 01, 2008 7:18 PM Subject: [Repeater-Builder] Re: QRM on 220 ----- Original Message ----- From: "res1q6fs" [Over] the past few weeks, I have heard signals of a fairly strong nature on 224.18 MHz. I am wondering if anyone else has heard signals on the 220 band? ================================== Hi, Roger -- I have a friend who is the trustee of a repeater with an output of 224.000. When he chose this frequency in the 1970's, it was a clear channel. Since the advent of computers in nearly everything, it is not possible to use his repeater without engaging PL decode. Otherwise, every gas station, store, and diesel truck you pass will send out a signal that will break any squelch set at maximum. In fact, my Alinco (220) hand held radio generates this interfering signal internally, producing a full-scale reading on the S-Meter. Thanks and 73, <<<<< Bil Seymour -- WA6MOD >>>> "Everyone Follows the Bass Player" ------------------------------------------------------------------------------ Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.17.0/1180 - Release Date: 12/10/2007 2:51 PM
