Re: [Repeater-Builder] Just a couple of dB loss you say?
So, when you're down 20 dB it's time to refill the coffee cup? Chuck WB2EDV - Original Message - From: Neil McKie [EMAIL PROTECTED] Sent: Friday, July 16, 2004 12:16 PM Subject: [Repeater-Builder] Just a couple of dB loss you say? The following is from a coffee cup I got several years ago from Allis - Northwest ... a manufacturers representative Just a couple of dB loss? The effect of insertion loss on transmitted power (dB to % loss) Loss %Loss % Loss % dB Loss dB Loss dB Loss 0.1 2.28 1.7 32.4 3.3 53.2 0.2 4.50 1.8 33.9 3.4 54.3 0.3 6.67 1.9 35.4 3.5 55.3 0.4 8.80 2.0 36.9 4.0 60.2 0.5 10.9 2.1 38.3 5.0 68.4 0.6 12.9 2.2 39.7 6.0 74.9 0.7 14.9 2.3 41.1 7.0 80.0 0.8 16.8 2.4 42.5 8.0 84.2 0.9 18.7 2.5 43.8 9.0 87.4 1.0 20.6 2.6 45.0 1090.0 1.1 22.4 2.7 46.3 1192.1 1.2 24.1 2.8 47.5 1293.7 1.3 25.9 2.9 48.7 1395.0 1.4 27.6 3.0 49.9 1496.0 1.5 29.2 3.1 51.0 1596.8 1.6 30.8 3.2 52.1 2099.0 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/
Re: [Repeater-Builder] Just a couple of dB loss you say?
That's a good start ... Neil - WA6KLA Chuck Kelsey wrote: So, when you're down 20 dB it's time to refill the coffee cup? Chuck WB2EDV - Original Message - From: Neil McKie [EMAIL PROTECTED] Sent: Friday, July 16, 2004 12:16 PM Subject: [Repeater-Builder] Just a couple of dB loss you say? The following is from a coffee cup I got several years ago from Allis - Northwest ... a manufacturers representative Just a couple of dB loss? The effect of insertion loss on transmitted power (dB to % loss) Loss %Loss % Loss % dB Loss dB Loss dB Loss 0.1 2.28 1.7 32.4 3.3 53.2 0.2 4.50 1.8 33.9 3.4 54.3 0.3 6.67 1.9 35.4 3.5 55.3 0.4 8.80 2.0 36.9 4.0 60.2 0.5 10.9 2.1 38.3 5.0 68.4 0.6 12.9 2.2 39.7 6.0 74.9 0.7 14.9 2.3 41.1 7.0 80.0 0.8 16.8 2.4 42.5 8.0 84.2 0.9 18.7 2.5 43.8 9.0 87.4 1.0 20.6 2.6 45.0 1090.0 1.1 22.4 2.7 46.3 1192.1 1.2 24.1 2.8 47.5 1293.7 1.3 25.9 2.9 48.7 1395.0 1.4 27.6 3.0 49.9 1496.0 1.5 29.2 3.1 51.0 1596.8 1.6 30.8 3.2 52.1 2099.0 Yahoo! Groups Links 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/
Re: [Repeater-Builder] Just a couple of dB loss you say?
If the dual tones went away. how do you remotely control your system via radio? Neil Ken Arck wrote: At 10:48 AM 7/16/2004 -0700, you wrote: I know, now you want my study of the tone frequency comparisons of the Bell System Touch-Tone plan? ---Naaah. Dual tones went out with 62 Nash Ramblers :-) Ken - President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html AH6LE/R - IRLP Node 3000 http://www.irlp.net Yahoo! Groups Links 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/
[Repeater-Builder] Need tuning instructions for Celwave preselector
Looking for tuning instructions and/or information on a Celwave model HFD8461A preselector-thingy-do-bob - any help would be appreciated. Direct replies are encouraged. Thanks. - Adam - 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/
[Repeater-Builder] Mitrek Local audio
I have a UHF Mitrek 30 watt radio that was removed from a consolette and has been converted for repeater use. All is working FB except for local Rx. audio only hear weak pop in speaker when keyed. I am using the same setup with another radio and all works OK. Even the squelch control works correctly. Could a jumper be on the board somewhere that I have not found that will mute local audio? Speaker is connected to pins 3 and 5 Volume wiper to pin 15 Jimmy Floyd NQ4U 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/
Re: [Repeater-Builder] Just a couple of dB loss you say?
At 05:07 AM 7/17/2004 -0700, you wrote: If the dual tones went away. how do you remotely control your system via radio? ---I didn't say they weren't useful (or still used). I just said they were outdated Ken -- President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html AH6LE/R - IRLP Node 3000 http://www.irlp.net 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/
Re: [Repeater-Builder] Need tuning instructions for Celwave preselector
Adam, Although the preselector is manufactured by RFS/Celwave, HFD8461A is a Motorola part number. This preselector is intended to be used in the GR1225 and similar repeaters in the 144-160 MHz band. It appears to be similar to a Celwave 911-PB4-1-2 unit, except that it has N connectors. It may be a unique design for Motorola, and not available as a Celwave product line item. I looked in my GR1225 and RKR1225 manuals for additional information, but found none. Most such preselectors are bandpass versions of mobile notch duplexers, with all resonators in series. You should be able to simply rough-tune the preselector on a spectrum analyzer for a peak response at the receive frequency. Then, install it in your receiver feedline and fine-tune it with a service monitor for best sensitivity at 12dB SINAD. Be aware that helical resonator preselectors are rather lossy, with insertion losses between 2 and 4 dB. Try calling Motorola Parts ID at 800-422-4210, and ask for the publication number that covers HFD8461A. 73, Eric Lemmon WB6FLY Adam T. Cately wrote: Looking for tuning instructions and/or information on a Celwave model HFD8461A preselector-thingy-do-bob - any help would be appreciated. Direct replies are encouraged. Thanks. - Adam - Yahoo! Groups Links 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/
[Repeater-Builder] List operation
I have a few questions about the mechanics of operating a list such as this. Could one of the moderators email me direct if you're willing to answer some? Thanks a bunch. 73, Roger Grady K9OPO 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/
