I wrote a little dos program years ago to design helical resonators. If
anyone is interested.
http://members.cox.net/wd0fyf/files/helix.zip
The zip file contains a program for helical resonators and one for helical
antennas. They use no disk access, have limited error checking, no help and
[EMAIL PROTECTED] wrote:
I've already breadboarded a time hack unit which marries a WWV receiver to
a tone decoder. At the beginning of each hour, WWV broadcasts 800 ms of a
1500 Hz tone. I have a simple tone detector set to key the repeater when it
I once tried to pick up the 10 MHz WWV
At 11:22 PM 11/23/2006, you wrote:
mailto:no6b%40rptrlist.w6jpl.ampr.org[EMAIL PROTECTED] wrote:
I've already breadboarded a time hack unit which marries a WWV
receiver to
a tone decoder. At the beginning of each hour, WWV broadcasts 800 ms of a
1500 Hz tone. I have a simple tone detector
HI..I have a brand new Link Communications RLC-1 Plus controller with
rack mount plate and the Icom 900/901 band module interface module. We
never got our project off the ground. So we have decided to sell it
and if anyone has any interest let me know. We probally will go the
ebay route..Thanks..
I am seeking a manual, print, or actual unit.. a TS0089 Speaker and channel
switch assembly for a 800 series repeater/base station.
Help!
Lance, N2HBA
- Original Message -
From: vince
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, November 23, 2006 12:38 PM
Subject:
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
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
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?
John,
Front-end crystal filters are generally available only up to 200 MHz or
thereabouts, so you may not find a supplier of such a filter for the 70cm
band. Here is one of several sources of crystal filters:
http://www.mtronpti.com/products/index.php?id=65
73, Eric Lemmon WB6FLY
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
Anyone have a good source for screw mount chassis feed through caps?
Some place without a big minimum order. Need to bring a few more
signals in and out of my RF boxes.
Gary,
EMI Filter Company offers many styles and ratings of feed-through filters.
The last batch I bought from EMI was #B8P203B, which is rated 0.02uF and
100V, with an 8-32 shank. As I recall, they cost about a buck apiece when
you get 25- a very good price. Go here:
Gary
Surplus Sales of Nebraska as a decent selection of threaded feed thru caps of
various values:
http://www.surplussales.com/Feedthrus/FTholeMnt5.html
Dan's Small Parts in Montana might have something for you as well:
http://www.danssmallpartsandkits.net/
Good luck
73,
John Maurer WØDP
Skycraft Surplus in Winter Park Fla has them.
73 John VE3AMZ
- Original Message -
From: Gary [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, November 24, 2006 5:49 PM
Subject: [Repeater-Builder] feed through caps
Anyone have a good source for screw mount chassis
I have a small pile of used feedthroughs.
They have the markings:
AVX 1000
1KV M
Threaded shaft with nut
Would these work for your application?
contact me at dangit5 (((at))) gmail )))dot((( com
Dave / N9NLU
--- In Repeater-Builder@yahoogroups.com, Gary [EMAIL PROTECTED] wrote:
Anyone
I am trying to either buy, or build one of the channel change assemblies. My
unit has an internal prom, but I need to be able to change channel from the
front panel.
lance
- Original Message -
From: vincent barnett
To: Repeater-Builder@yahoogroups.com
Sent: Friday, November
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
Gary,
The parallel capacitance and voltage rating of feedthrough filters should be
selected after careful consideration of the signal frequencies you want to
pass, the DC and/or AC voltage levels expected, and the RF frequency and
power levels you want to block. Some feedthrough filters are
Make sure that you have the signal level to use a crystal filter. Some can be
as low as 2db insertion loss, others can be as high as 10db.
At 11:44 AM 11/24/06, you wrote:
John,
Front-end crystal filters are generally available only up to 200 MHz or
thereabouts, so you may not find a supplier of
By the way, Miguel, there is an article at www.repeater-builder.com on
that tone board, and another on how to make your own tone plugs for it.
Just click on Motorola and then on Mitrek.
Mike WA6ILQ
At 03:50 AM 11/24/06, you wrote:
Thank you Ken!!!
Happy Holiday's
Miguel, ai4sb
--- In
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