[Repeater-Builder] Programming Cable for TKR-850
Can anyone tell me about the programming cable for the Kenwood TKR- 850. I just purchased the repeater but did not want to pay what seemed like alot of $$ for a programming cable. I want to be able to setup the radio when it arrives, so I am going to build up my own programming cable. There is only one small picture in a copy of a manual I have found on the net that shows the data in/out connections to the radio mic jack. Does any know if these are true RS232 or TTL signals required? Can I just use a MAX232 circuit to convert from my DB9 Serial to the RJ connector on the radio? Thanks in advance for any info - Jim K7RNR 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] Why need a commercial community tone board ?
>> Also add a commercial community tone board >> with DCS to keep things orderly. Can anyone explain the need for a community tone board and DCS? I understand that some radios allow us to use the digital coded squelch, but why the community tone board? Best I can tell from researching them on the net (and on repeater-buider site) is that they are used when a repeater owner wants to track usage by different groups of people, each assigned a different CTCSS code or DCS code (?), sometimes used for billing purposes. I am building up a first-time UHF reapeater/remote for local emergency use but am now a bit confused as to whether I am best to buy a simple CTCSS decoder or a whole "community panel"? Equipment obtained thus far is a Kenwood UHF TKR-850 repeater radio with Decible Products Duplexer. Thanks in advance for any comments. Jim K7RNR 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] Re: Programming Cable for TKR-850
I did some more digging and looking at the schematic. I found that the TKR-850 has an on-board RS232 transceiver (IC620) that only works with the back-panel serial connections. The front-panel mic connector serial connections are TTL and must be connected through a level converter. I will look first for a TK-880 cable and build my own using a MAX233 transceiver if I can't find one. Here's a link to an example of builiding a MAX233-based interface that I'll try : http://www.mods.dk/mods.php3?radio=kenwood&model=th- f7&selectid=2508#2508 Thanks for the help. Jim K7RNR > Can anyone tell me about the programming cable for the Kenwood TKR- > 850. I just purchased the repeater but did not want to pay what > seemed like alot of $$ for a programming cable. I want to be able . . . . > just use a MAX232 circuit to convert from my DB9 Serial to the RJ > connector on the radio? 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] TKR-850 - Where to get CTCSS enable signal?
In the course of connecting my new TKR-850 to my Arcom RC210 controller I found out that the repeater's "Squelch Control" ouput is not actually a CTCSS squelch signal, it is a COS signal only. In other words, the "SC" pin goes from 5v to 0v whenever ANY signal is on the receiver channel, whether or not it has the right CTCSS with it. The CTCSS is enabled for the channel in the programming (173.8), but it only cuts off the audio. The CTCSS enable is not reflected on the repeater's SC pin. When I change to the wrong CTCSS code on my handheld, the receiver speaker is quiet, and no audio gets to the controller, but the "busy" light on the front lights and the SC pin goes to 0v. I cannot see any other output pin for CTCSS enable ... so my option appears to be either to use an external CTCSS decoder or to find a signal in the receiver that does reflect the true CTCSS enable state. Anyone deal with this issue on a TKR-850? Thanks! Jim K7RNR 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] Re: TKR-850 - Where to get CTCSS enable signal?
> In the course of connecting my new TKR-850 to my Arcom RC210 > controller I found out that the repeater's "Squelch Control" ouput is > not actually a CTCSS squelch signal, it is a COS signal only. In I missed it the first couple of passes through, but I dug back into the manual again and found a table that showed I can assign something called "TOR" to an auxillary output pin. TOR can be high or low enabled when a valid COS and CTCSS are available. The TKR-850 is now working great with the Arcom RC210. Fun stuff. Thanks for all the suggestions. Jim K7RNR 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/
