Re: [Repeater-Builder]Repeater Controller (new)
The 27C64 is a low power version of the 2764 so it depends on the design of your controller as to exactly what will happen if you try to substitute the higher power version. They are pin for pin interchangeable. Generally the high power version requires more TTL drive while it provides more drive on the output. If you have access to a UV eraser, why don't you erase the existing 27C64 and reprogram it? Digikey has the 27C64 if you think you need to go that way. I erased the EPROMs in a Tait 800 and reprogrammed them with the new frequency info. Some of the older EPROMs will erase, and you will find that some won't erase at all. You just have to give it a try. 73 - Jim W5ZIT -Original Message- From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Fri, 24 Nov 2006 11:21 AM Subject: [Repeater-Builder]Repeater Controller (new) I am helping the club bring an repeater back up on air, and I am working on the controller. I am trying to change the callsign in it, I have found what info I need, but my question to the group is- The controller uses a 27c64 EPROM, and all I have is 2764 types? Can I use the ones I have, or do I need to get the right one? I am new to the EPROM world, so I don't know much about them. It goes to show one is never too old to learn a new part of the hobby... 73 Mike - N7ZEF Check Out the new free AIM(R) Mail -- 2 GB of storage and industry-leading spam and email virus protection.
Re: [Repeater-Builder]Repeater Controller (new)
Either *should* work. You would have to consult the data sheets but as I recall the C version is CMOS, perhaps a little less current draw and faster operation. 73 de Jack - N7OO - Original Message - From: Mike Reed To: Repeater-Builder@yahoogroups.com Sent: Friday, November 24, 2006 10:21 AM Subject: [Repeater-Builder]Repeater Controller (new) I am helping the club bring an repeater back up on air, and I am working on the controller. I am trying to change the callsign in it, I have found what info I need, but my question to the group is- The controller uses a 27c64 EPROM, and all I have is 2764 types? Can I use the ones I have, or do I need to get the right one? I am new to the EPROM world, so I don't know much about them. It goes to show one is never too old to learn a new part of the hobby... 73 Mike - N7ZEF Messages in this topic (1) Reply (via web post) | Start a new topic Messages | Files | Photos | Links | Members Change settings via the Web (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest | Switch format to Traditional Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe Recent Activity a.. 22New Members b.. 1New Links c.. 3New Files Visit Your Group New Message Search Find the message you want faster. Visit your group to try out the improved message search. Share feedback on the new changes to Groups . __,
Re: [Repeater-Builder]Repeater Controller (new)
At 09:21 AM 11/24/2006, you wrote: >I am helping the club bring an repeater back up on air, and I am working on >the controller. I am trying to change the callsign in it, I have found what >info I need, but my question to the group is- The controller uses a 27c64 >EPROM, and all I have is 2764 types? Can I use the ones I have, or do I need >to get the right one? I am new to the EPROM world, so I don't know much >about them. <---Yes Mike you can use the "non-C" type. (the C type is simply a low power cmos version). The one you have will draw a little more current but nothing to worry about I'm sure Ken -- President and CTO - Arcom Communications Makers of the world famous RC210 Repeater Controller and accessories. http://www.ah6le.net/arcom/index.html Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net
Re: [Repeater-Builder]Repeater Controller (new)
hi mike yes you can use a2764 if u dont have a 27c64/or a 2764a/ with no probs i 2 use this in my tait so sould be ok for yours Mike Reed <[EMAIL PROTECTED]> wrote: I am helping the club bring an repeater back up on air, and I am working on the controller. I am trying to change the callsign in it, I have found what info I need, but my question to the group is- The controller uses a 27c64 EPROM, and all I have is 2764 types? Can I use the ones I have, or do I need to get the right one? I am new to the EPROM world, so I don't know much about them. It goes to show one is never too old to learn a new part of the hobby... 73 Mike - N7ZEF Send instant messages to your online friends http://uk.messenger.yahoo.com
[Repeater-Builder]Repeater Controller (new)
I am helping the club bring an repeater back up on air, and I am working on the controller. I am trying to change the callsign in it, I have found what info I need, but my question to the group is- The controller uses a 27c64 EPROM, and all I have is 2764 types? Can I use the ones I have, or do I need to get the right one? I am new to the EPROM world, so I don't know much about them. It goes to show one is never too old to learn a new part of the hobby... 73 Mike - N7ZEF
