Dear all,
Can anybody help me to give the design idea of the low pass filter having
pass frequency of 470-474 MHz and notch at the frequency 482-488 MHz.
Thanks in advance .
-
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Our ARES Group has recently acquired a number of Micor UHF radios that
were in service as commerical repeaters. We are looking to have them
converted to UHF ham frequencies (first frequency already coordinated)
and made serviceable for our group.
If you are aware of any good Micor repair facil
Thanks for everyones help. I think the tripod mount
will hold the top section of the 420. I will give it
a shot this week. The DB420 has been sitting in my
garage for a couple of years after being given to me
because it was being thrown out. One mans junk is
anothers treasure I guess. I was ama
Hello all. I'm new to the group and am looking for info on interfacing
my Midland 70-0351C 6mtr radio to an SCom 7k controller as a remote
base. I need the wireing diagrams to be able to do this. Thanks.
A lot about what you mention is probably a level set issue
between the cards/modules in play.
I would suspect the main reason for the dual squelch layout is
how the micor, msr and various other similar circuits were used
for more than just voice audio.
The Squelch Gate Module is probably muc
--- In Repeater-Builder@yahoogroups.com, Preston Moore
<[EMAIL PROTECTED]> wrote:
>
> I know there is a harness available to allow two
> seperate antennas out of one DB-420. I am wondering
> why the SWR will be out of whack if I just use the top
> section. Is the harness the problem?
>
> Later
--- In Repeater-Builder@yahoogroups.com, Preston Moore
<[EMAIL PROTECTED]> wrote:
>
> Can I use just the top section of the DB-420 without
> changing the phasing harness?
Well, I salvaged a DB420 from a junquepile at a two-way shop. The
pigtail was lightning damaged, so I took the top half, an
I have 2 DB-420 on the air 450-470 split, Minimal SWR at 441.XXX and 442.XXX,
works great. One of mine is at 150' on top of a water tower and the other is on
top of a 322ft old microwave tower. The one at 322' has a 40+ mile range with a
good mobile (Dependant upon terrain, of course).
You wil
Good Evening,
I have a site with a PD455-5 at 400ft that has failed me after 10
years of service. The reflected power has risen to about 10% of the
forward power, and coverage is drastically reduced.
Rather than installing another PD455-5 (which will most likely fail
in another 10 years due t
If anybody aboard can use a couple of Motorola swivel belt clips
42C82421J06, I'll throw them
in the mail to you.
** See what's free at http://www.aol.com.
At 09:59 AM 04/29/07, you wrote:
I have a Micor Station 100 VHF that was used as a paging base. I
removed the backplane and installed a "normal" one and removed the
cards for paging, and installed normal base station cards. I
completed the conversion (removing diode) for allowing the receiver
Meter the pins to both the audio squelch board and reciever board and see where
it is losing voltage while ptt is active (probably losing 9.6 volts somewhere)
then find 9.6v supply and tie it in directly. You should have been able to use
the paging backplane, I did on mine with outboard control
It's a Unified backplane.
Jim, K8COP
_,_._,___
I have a Micor Station 100 VHF that was used as a paging base. I removed the
backplane and installed a "normal" one and removed the cards for paging, and
installed normal base station cards. I completed the conversion (removing
diode) for allowing the receiver to operate all the time. Here is
At 4/28/2007 23:42, you wrote:
>Keeping in mind the normal Micor Squelch is a dual speed squelch
>circuit for the audio and a second squelch (on the Squelch Gate
>Module) circuit for the repeater cor/cos/tx function.
Yes, but I've found no use for the latter, as all repeater controllers made
toda
On the one's I've removed, there wasn't a need to use a torch. Just remove the
screws at the top and
bottom and pull from the base. When finished examining the removed assembly,
it should slide back
together without too much fuss.
Jack - N7OO
- Original Message -
From: Paul Metz
Hello Jim,
Actually, I took my first super station master apart just last week
or so. I removed guts of the antenna, and replaced them with a 70CM
Diamond F718A vertical (11.5db). The entire Diamond antenna slid
right up into the shell of the super station master with room to
spare (abou
It would be simpler and cheaper to find a tuneable or
frequency agile modulator. Jerrold, Blonder Tongue,
DX Antenna, Drake, and Olson are just a few of the
companies that make them. I've seen them for as
little as $20. Paul kb9wlc
--- Wallace Steinbrecher
<[EMAIL PROTECTED]> wrote:
> Gentleme
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