RE: [Repeater-Builder] Fwd: DB4379UHF combiner
You might try finding a spec for a similar maybe same model 2ch combiner. Then see if your isolator cabling system is the same. Ross -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ted Leonard Sent: Thursday, May 27, 2010 11:33 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Fwd: DB4379UHF combiner To the group, I received the attached e-mail from a friend in the two way business. Does anyone know if his goal can be met as he describes below? Also could someone point me to the tuning instructions for this beast. Thank you, Ted W3VG Original Message Subject: DB4379UHF combiner Date: Thu, 20 May 2010 11:16:13 -0400 From: Robert Harvey <mailto:freedom...@windstream.net> To: Ted Leonard <mailto:n2...@verizon.net> Ted, you're the filter guy. I have a DB products DB4379-4404B 4 channel UHF combiner. You did a little bit of tuning on it once in the shop. Do you know, or can you find out, if it can be turned into two, 2 channel combiners? I want to combine 461.625, 461.650, 463.625 & 463.650 but the combiner is speced at 50KHz spacing. There are two splits of only 25KHz on the frequencies I need to work with. Combining 461.625 and 463.625 on one combiner and antenna and combine 461.650 and 463.650 on another combiner and antenna would save me antennas and feedline and lots of money if I can modify the combiner I own. Bob Robert D. Harvey Freedom Communications, Inc aka: RDH / TransCom voice (716) 664-2659 fax (716) 483-5968 email freedom...@windstre <mailto:freedom...@windstream.net> am.net
RE: [Repeater-Builder] Fwd: DB4379UHF combiner
If he can disconnect the output of the cans from the antenna adaptor then he can split it into two separate 2 channel units. He might have to remount two of the cans in a separate chassis to eliminate any mutual coupling as necessary. Wayne Cornick IE Communications Inc. 21 West Front Street P.O. Box 67 Trenton, IL. 62293 618.224.7138 Phone 618.224.9006 FAX wa...@iecomm.com -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ted Leonard Sent: Thursday, May 27, 2010 1:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Fwd: DB4379UHF combiner To the group, I received the attached e-mail from a friend in the two way business. Does anyone know if his goal can be met as he describes below? Also could someone point me to the tuning instructions for this beast. Thank you, Ted W3VG Original Message Subject: DB4379UHF combiner Date: Thu, 20 May 2010 11:16:13 -0400 From: Robert Harvey <mailto:freedom...@windstream.net> To: Ted Leonard <mailto:n2...@verizon.net> Ted, you're the filter guy. I have a DB products DB4379-4404B 4 channel UHF combiner. You did a little bit of tuning on it once in the shop. Do you know, or can you find out, if it can be turned into two, 2 channel combiners? I want to combine 461.625, 461.650, 463.625 & 463.650 but the combiner is speced at 50KHz spacing. There are two splits of only 25KHz on the frequencies I need to work with. Combining 461.625 and 463.625 on one combiner and antenna and combine 461.650 and 463.650 on another combiner and antenna would save me antennas and feedline and lots of money if I can modify the combiner I own. Bob Robert D. Harvey Freedom Communications, Inc aka: RDH / TransCom voice (716) 664-2659 fax (716) 483-5968 email freedom...@windstre <mailto:freedom...@windstream.net> am.net No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2899 - Release Date: 05/27/10 01:25:00
Re: [Repeater-Builder] Fwd: DB4379UHF combiner
If you wanted to go with 2 2ch combiners instead of 1, you can put 451.525 and 453.525 on one and 451.550 and 453.550 on another if your worried about desence and such. But you would want to get a hybrid coupler, 2 inputs, 1 output and 1 port for dummyload. On Thu, May 27, 2010 at 11:32 AM, Ted Leonard wrote: > > > To the group, > I received the attached e-mail from a friend in the two way business. > Does anyone know if his goal can be met as he describes below? > Also could someone point me to the tuning instructions for this beast. > > > Thank you, > Ted W3VG > > Original Message > Subject: DB4379UHF combiner Date: Thu, 20 May 2010 11:16:13 -0400 From: > Robert HarveyTo: > Ted Leonard > > Ted, you're the filter guy. > > I have a DB products DB4379-4404B 4 channel UHF combiner. You did a little > bit of tuning on it once in the shop. > > Do you know, or can you find out, if it can be turned into two, 2 channel > combiners? > > I want to combine 461.625, 461.650, 463.625 & 463.650 but the combiner is > speced at 50KHz spacing. There are two splits of only 25KHz on the > frequencies I need to work with. > > Combining 461.625 and 463.625 on one combiner and antenna and combine > 461.650 and 463.650 on another combiner and antenna would save me antennas > and feedline and lots of money if I can modify the combiner I own. > > Bob > > Robert D. Harvey > Freedom Communications, Inc > aka: RDH / TransCom > voice (716) 664-2659 > fax (716) 483-5968 > email freedom...@windstream.net > > >
[Repeater-Builder] Fwd: DB4379UHF combiner
To the group, I received the attached e-mail from a friend in the two way business. Does anyone know if his goal can be met as he describes below? Also could someone point me to the tuning instructions for this beast. Thank you, Ted W3VG Original Message Subject:DB4379UHF combiner Date: Thu, 20 May 2010 11:16:13 -0400 From: Robert Harvey To: Ted Leonard Ted, you're the filter guy. I have a DB products DB4379-4404B 4 channel UHF combiner. You did a little bit of tuning on it once in the shop. Do you know, or can you find out, if it can be turned into two, 2 channel combiners? I want to combine 461.625, 461.650, 463.625& 463.650 but the combiner is speced at 50KHz spacing. There are two splits of only 25KHz on the frequencies I need to work with. Combining 461.625 and 463.625 on one combiner and antenna and combine 461.650 and 463.650 on another combiner and antenna would save me antennas and feedline and lots of money if I can modify the combiner I own. Bob Robert D. Harvey Freedom Communications, Inc aka: RDH / TransCom voice (716) 664-2659 fax (716) 483-5968 email freedom...@windstream.net No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2885 - Release Date: 05/20/10 02:26:00
