Only one of the five front-end coils for a Range 1 VHF Mitrek (HLD4081,
136-146 MHz) is still available from Motorola Parts. That one is part
2480032A07, the violet coil in L1, for $ 4.15.
The only option may be to tack on some extra wire to the existing coils.
Although modifying the tuning
This probably will not work on the Mitrek since it may not use slugs to tune
the coil, but I had a problem with a crystal on a Delta radio that would not go
low enough in frequency. I removed the slug from the F2 coil and ran the slug
for the F1 coil through max inductance and then added the
I've had to add wire to the helicals on two Micors (UHF) to get them down to
447.75. It did the trick. It would certainly be worth a try.
Chuck
WB2EDV
- Original Message -
From: Eric Lemmon wb6...@verizon.net
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, December 20, 2008 10:27
Re: Want: GLB Receiver Pre-selector (please)
Yes, the box and board Joe sent the picture in is one of
the GLB Preamplifier beasts I'm looking for.
I've seen this same and similar circuit appear in a number of
receivers, pre-amplifiers, pre-selector circuits going way back
to early
Thanks to all who have responded. A quick up date.
Putting the dummy load on the TX port of the repeater (replace the
duplexer with a dummy load) has shown that the repeater works without
cycling - so my initial thought of something going on inside the
repeater is out the window... (Thanks Doug)
Hi Doug,
Thanks, I thought about the dummy load on the TX output directly on
the way home last night. So I am going to try it as soon as I can get
to it.
I didn't think about checking the TX spectrum while the thing was
cycling - thanks.
Regards,
Rick
--- In
Hi Rick -- I am new to the group so I have not seen all of the posts with
regards to your problem on the 7000. However, one thing that
you may want to check is whether the PL is feeding back into the RX from the
TX, if the tones are the same. I have seen this several
times in the past on different
I have 3 of them, One has HT-90 crystal controlled units inside. The other
2 are GP-300 and can be programmed. It is a bit of a hassle, as I do not
have whatever is the proper interface, so I took the units out and popped
them into gp300 cases and programmed them, then put them back into the
John -- et al -- I opened the zip without issue and everything is there as
far as I can tell -- send me an email and I will send the 160 pages to you
-- LOL!
Rick
On Thu, Dec 18, 2008 at 2:43 PM, Joe k1ike_m...@snet.net wrote:
Kevin sent this link and it works.
Hi Eric,
Thanks, I haven't taken the cover off yet, but I will. And yes the
typo demon got me on the duplexer it is a DB 4062, 6 cavity duplexer.
Regards,
Rick
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote:
Rick,
You might check to see if the internal jumpers
Anybody have any NHRC-squelch boards in service? I am looking at
getting either one of those or a RLC-MOT board from link
Communications. Is one better then the other? Do they do the same
thing? Anybody try to clone an NHRC board? (they look easy) I am
wanting to install something on a Mitrek for
HI Jim,
Thanks for the response, I was using the port on the 4304 to inject
the signal from the service monitor. The cables in the duplexer are
1/4 super flex.
Nope your are not preaching to the choir. This is my first time
trying to trouble shoot a repeater system. So I know that there are
Huh? Since when is a GP300 not type accepted for GMRS? News to me, but I
have been wrong before. (once!)
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Milt
Sent: Thursday, December 18, 2008 2:12 PM
To:
Kenny, I sent you a copy of the manual -- unzipped --
Rick NU7Z
On Thu, Dec 18, 2008 at 2:56 PM, KG5KS - Kenny Thompson kg...@yahoo.comwrote:
Guess the ham that said he would send the manual has forgotten about
it..hi I need a manual with pinout or specs for the Dataradio 96+ unit.
I'm
Dear Bob,
I've got the MSR-2000 manuals for the repeater gear that I have to
maintain. I'd love to have the relevant manual sections for this
power amp. It's OK that the unit has sealed modules in it. I'm
looking for the specs, tuning info, schematic and all, so that I can
maintain this
Some neat projects and ideas available on this web page.
http://www.w1ghz.org/small_proj/small_proj.htm
enjoy,
s.
I was directed by someone on the reflector here some months back, to a
cooling fan timer circuit that is posted on the repeater builders website.
I wonder if anyone has tried to build this ? - Thanks.. - Mike
I would think that the person who designed it, and submitted it for posting on
r-b, built and tested it.
Did you have a problem with it? Do you think there's an error in the diagram?
If so, it should be fixed. Please provide more info.
Bob M.
==
--- On Sat, 12/20/08, Michael Ryan
I have available a DHE 4RV 4 receiver voter system. Please note that
this is an
older generation than the 4RV/2 which is currently being produced. This system
consists of a 4RV voter, a VCM, and power supply in a 19 inch rack
mount. It was
removed from a site that was decommissioned and was not
You're not wrong this time. A UHF GP300 radio with the FCC ID of either
ABZ99FT4010 or ABZ99FT4011 is approved for Part 95- but only for 16K0F3E
emissions. GMRS yes, FRS no.
Moving on to the SYSTEL question, I just discovered that the manual is still
available from Motorola Parts. It is manual
Yes Kevin,
I am interested, contact me off list to discuss.
Mike KB5FLX
m.dietr...@peoplepc.com
---
- Original Message -
From: Kevin Berlen, K9HX
To:
I'm reassembling a UHF Micor station. I have a Audio/squelch
#TRN6006A. Is this the correct board? There is no audio amp in the
chassis either. Does it use one from a VHF or UHF Mobile??
Thx WX3M
Terry wrote:
I'm reassembling a UHF Micor station. I have a Audio/squelch
#TRN6006A. Is this the correct board?
Yes - usually.
There is no audio amp in the
chassis either. Does it use one from a VHF or UHF Mobile??
Most of the audio amp is on the AS Board, but the pass transistor
(power
Eric Lemmon wrote:
Only one of the five front-end coils for a Range 1 VHF Mitrek (HLD4081,
136-146 MHz) is still available from Motorola Parts. That one is part
2480032A07, the violet coil in L1, for $ 4.15.
The only option may be to tack on some extra wire to the existing coils.
Although
At 12/18/2008 10:02, you wrote:
Hi Rick -- I am new to the group so I have not seen all of the posts with
regards to your problem on the 7000. However, one thing that
you may want to check is whether the PL is feeding back into the RX from
the TX, if the tones are the same. I have seen this
Kevin,
Other than being physically smaller, I don't know of any helical resonator
design issues that preclude your Micor mod from being adapted to the Mitrek.
I am modifying some low-band Mitreks for 6m duty, but all that takes is a
handful of capacitors. I have yet to address converting a
The question is frequency stability for fixed stations. If the unit is
operated as built (minus the phone patch) vs the possible use of an external
amplifier as mentioned in the original post. Just because the portable on
which the unit is based is type accepted for portable use, the use of
Hi Eric,
Kevin,
Other than being physically smaller, I don't know of any helical resonator
design issues that preclude your Micor mod from being adapted to the Mitrek.
Oh okay good - - I was unsure if there was something I was
missing; which could easily be the case.
Thanks,
Kevin
Hi,
Is there a point inside the Mitrek that one can take the audio out to the
controller (in this case a Link-Comm RLC-2A)? A low band Mitrek (33Mhz)
I have downloaded the information fromLou's Mitrek Repeater Conversion and a
couple of others which mention a schematic for emphasis before going
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