I had a similar experience with a low power FM transmitter that a church
put on the air. I started to get interference on my 6 meter repeater.
It turned out that the local church moved their FM station to the tower
that I am on and put their antenna on the top of the 300 foot tower 5
feet
Ryan,
The information you want is at http://www.prestonmoore.com/opc-617.html
JOhn
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com]
On Behalf Of ryan_151
Sent: Tuesday, July 13, 2010 10:26 PM
To: Repeater-Builder@yahoogroups.com
Is there a cheap way to combine two txcvrs into one antenna... 144.39 APRS
and 145.550 packet?
You could try a duplexer? There's enough channel separation it should
work OK. Not sure what duplexer would be best for running duplex though
each side but I'm sure there out there.
73
Ross kc7rjk
-Original Message-
From: Repeater-Builder@yahoogroups.com
About the only way is via a duplexer. (Cheap? Well... used??? ;- )
Joe M.
na4it wrote:
Is there a cheap way to combine two txcvrs into one antenna... 144.39 APRS
and 145.550 packet?
Maybe a pair of those 6 cavity mobile duplexers with the 5 MHz split
can be configured as 6 notch sections each to reject the opposite
frequency. and then combine them with a T to the antenna.
Lossy, but should be cheap, I've seen those go in the $20 range.
On Thu, Jul 15, 2010 at 1:49 PM, MCH
At 7/15/2010 13:53, you wrote:
Maybe a pair of those 6 cavity mobile duplexers with the 5 MHz split
can be configured as 6 notch sections each to reject the opposite
frequency. and then combine them with a T to the antenna.
Even though they're notch duplexers, each side has a very weak pass
I could live with 3dB of loss which is about what I would expect per
leg. I've ran the UHF notch duplexers back wards and they have ran
ok, but the insertion loss does go up like 1-2dB.
If you want to get picky you would have to modify each set so that the
coupling loops and coaxes are the same,
DCFluX dcf...@gmail.com wrote:
Maybe a pair of those 6 cavity mobile duplexers with the 5 MHz split
can be configured as 6 notch sections each to reject the opposite
frequency. and then combine them with a T to the antenna.
Lossy, but should be cheap, I've seen those go in the $20 range.
On
Does anyone have a spare DB8945 tower top preamplifier module hanging around?
Or, does anyone have any diagrams on this preamp module? I think I can repair
mine with a diagram or acess to a parts list.
Thanks,
RIck
Nope, wouldn't do it. It violates the rules under which we operate.
--- In Repeater-Builder@yahoogroups.com, Nate Duehr n...@... wrote:
On Jul 13, 2010, at 6:23 PM, KD5SFA wrote:
If a person whom you knew and is involved in a number
of church youth camps activities asked you to
Ok, I'm playing around with my Kenwood TKR-820 a bit. I've found the
instructions for HEX editing the channel and ctcss information after
reading it from the EEPROM, and they work great. But there's nothing
about DCS. I'm wiing to try and decipher how to get the DCS, but I
need a look at the
It appears my L button doesn't work half the time, guess I need to
take my keyboard apart and clean it.
Jeff
On 7/16/2010, kb1sph kb1...@wqex694.info wrote:
Ok, I'm playing around with my Kenwood TKR-820 a bit. I've found the
instructions for HEX editing the channel and ctcss information
Jeff,
I suspect you may be headed for disappointment. CTCSS (PL) and CDCSS (DPL)
are handled differently within the radio. While the former is audio, albeit
sub-audible, the latter requires a DC connection to the modulator in order
to create the DCS signal at a 134.4 Hz rate. In other words
Does anyone need INVAR rods?
I salvaged some from a TV audio / video RF combiner.
73
Glenn
WB4UIV
Ok, let me make it a little more clear for anybody that might not have
understood the first message. (No offense intended Eric)
A Kenwood TKR-820 repeater has CTCSS and DCS encoding and decoding built
into it with an on-board controller. The configuration is stored in a
EEPROM chip, 93C46
Hey, I didn't need DCS at the time.
Looks like TX code is at 80-81 Hex, and RX code is 82-83
81 EC = D023N
81 E6 = D026N
What DCS code do you need?
On Thu, Jul 15, 2010 at 8:46 PM, Jeff Lavoie - KB1SPH/WQEX694
kb1...@wqex694.info wrote:
Ok, let me make it a little more clear for anybody that
Scratch that 00-01 is TX, 02-03 is RX
On Thu, Jul 15, 2010 at 9:35 PM, DCFluX dcf...@gmail.com wrote:
Hey, I didn't need DCS at the time.
Looks like TX code is at 80-81 Hex, and RX code is 82-83
81 EC = D023N
81 E6 = D026N
What DCS code do you need?
On Thu, Jul 15, 2010 at 8:46 PM, Jeff
Hi Jeff,
I have a few DCS TKR-720/820 Eprom files in my collection. Email
me direct if you haven't got it figured out by the weekend. I
have a KPT-50, the software and the ponyprog setup you have
so I can help as time allows.
With that software and an inexpensive EEprom Programmer easily
Glen , I know some will think If I am to dumb to know what they are ,
Then I do not need them . But I still would like to know in layman terms
what is a INVAR Rodif I was guessing Maybe something that goes in a
duplexer
Thanks
Don KA9QJG
From: Repeater-Builder@yahoogroups.com
Invar is a special material. It is special that is has very low tempreture
expansion characteristics. When used for the tuning rod in a duplexer it
will compensate the expansion in the copper center conductor so that the
frequency of the cavity does not drift. I calculated a 6m cavity that uses
Well I'm not particularly needing any one code at the moment, just trying to
figure out how exactly to figure out the hex codes.
Thanks for the great tutorial on the rest. It makes it easy to change the
config when I want instead of having to call someone with a programmer. Now
if I can find
Skipp, sent you a message, but sometimes messages from my domain are put in
spam on yahoo. I still haven't figured out why, so if you don't get it in
your inbox, check the spam folder.
Jeff
--
From: skipp025 skipp...@yahoo.com
Sent: Friday,
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