I think I see how Steve's logic is leaning, and I agree - I don't see any
logical mix here until you include a user's transmission on one of the
repeater's inputs. Fred - do you hear ALL 147.33 transmitter activity
coming in on the 147.765 input, or just when there is actually a user keyed
up on 147.93? If the latter, that's a big clue...
--- Jeff
> -----Original Message-----
> From: [email protected]
> [mailto:[EMAIL PROTECTED] On Behalf Of Steve
> Bosshard (NU5D)
> Sent: Saturday, February 03, 2007 1:51 PM
> To: [email protected]
> Subject: Re: [Repeater-Builder] Intermod
>
> Shouldn't the 147.765 subscriber station be counted in the
> mix? While the distance and field strength may vary, the
> user sending to the 147.165 does make a contribution to the mix. sb
>
>
>
> On 2/3/07, Fred Flowers <[EMAIL PROTECTED]> wrote:
>
> Kevin,
>
> Please allow me to pick your brain.
>
>
>
> I was just informed of an intermod problem with 2 two
> meter repeaters. They are on towers about 2 miles apart.
> The frequencies are 147.33+ tone 107.2 & 147.165+ no tone.
> Two weeks ago I replaced the 147.33 equipment with a Mastr II
> station repeater & 4 cavity DB duplexer. I believe the
> 147.165 repeater to be a Micor. When the 165 is on the air,
> 33 can be heard on the input of 165. I show a third order of
> 270 kHz away & a fifth order of 270 & 105 kHz away.
>
>
>
>
>
>
>
>
>
>
>
>
> ________________________________
>
> Site Name:
>
> BG33
>
> Frequency Separation:
>
> 600.00 KHz
>
> Site Description:
>
> Ham
>
> Calculate 1st Order:
>
> true
>
> Company:
>
>
>
> Calculate 2nd Order:
>
> true
>
> User Name:
>
> Fred Flowers
>
> Calculate 3rd Order:
>
> true
>
> Address:
>
>
>
> Calculate 4th Order:
>
> true
>
> Time of Printing:
>
> February 03, 2007
>
> Calculate 5th Order:
>
> true
>
>
> ________________________________
>
> Transmitter Frequencies
>
> 147.16500 MHz
>
> 147.33000 MHz
>
> Receiver Frequencies
>
> 147.76500 MHz
>
>
> ________________________________
>
> Transmitter Freq(s).
>
> Receiver Freq.
>
> Freq. Separation
>
> First Order (Direct) Results:
>
> 147.1650 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> Second Order Results:
>
> Third Order Results:
>
> 147.1650 MHz - 147.1650 MHz - 147.1650 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.1650 MHz + 147.1650 MHz - 147.1650 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.1650 MHz - 147.1650 MHz - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> 147.1650 MHz - 147.3300 MHz - 147.3300 MHz
>
> 147.7650 MHz
>
> 270.00 KHz
>
> 147.1650 MHz + 147.3300 MHz - 147.3300 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.3300 MHz - 147.3300 MHz - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> 147.3300 MHz + 147.3300 MHz - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> Fourth Order Results:
>
> Fifth Order Results:
>
> 147.1650 MHz + 147.1650 MHz + 147.1650 MHz - 147.1650 MHz
> - 147.1650 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.1650 MHz
> - 147.1650 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.1650 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 270.00 KHz
>
> 147.1650 MHz + 147.1650 MHz - 147.3300 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 105.00 KHz
>
> 147.1650 MHz + 147.3300 MHz + 147.3300 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 600.00 KHz
>
> 147.1650 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 270.00 KHz
>
> 147.3300 MHz + 147.3300 MHz + 147.3300 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> 147.3300 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz
> - 147.3300 MHz
>
> 147.7650 MHz
>
> 435.00 KHz
>
> Calculations: 70
>
> IM Products Found: 18
>
> C Copyright 2007 - TCS Consultants, Inc. - All rights reserved.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> My question is, are the 105 & 270 kHz signals close
> enough to cause problems with a Micor receiver? I have
> worked on Mastr II's sense they came out. I have spent the
> same amount of time running from Micor's. :-)
>
> BTW I heard through the grape vine that the owner of
> 165 added a preamp in the last day or so. I don't know what
> kind. I don't know how he's dealing with desense.
>
>
>
> Thanks
>
> Fred N4GER
>
>
>
>
>
>
> --
> Ham Radio Spoken Here.....NU5D
> Visit the Temple Ham Club Website
> http://www.tarc.org
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.411 / Virus Database: 268.17.21/665 - Release
> Date: 2/2/2007
>
>
>
