I have a small quantity of these transceivers that were previously
spoken for but have not be taken and no response from the buyer to
emails. They are pullouts from service so condition is not known. I
also have a large quantity of the equivalent ICOMs, that is crystals
plus compensation networks.
I have some EF Johnson 930 - 950 MHz 1 watt transceivers Model DL-3490. They
have seperate receivers and transmitter bricks. Need to be modified with
different filters and crystals.
Mel K6KBE
- Original Message
From: Jed Barton <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.
I have a quantity of jumper 50 Ohm cables that are flexible and have a
stainless steel braid outer jacket. The all are N male to N male. The vary
from approx. 2 to 3 feet in length. I can measure the lengths sweep them at
900 MHz and check insertion loss if you are interested. I could also pr
Thanks Mike. Yes, the S-AV15 is used in my MICOR 220 repeater. What I am
looking for is a regular data sheet that and the curve that shows the power
output vs the control voltage. None of the sites I have found and yours do
that. Thanks again.
Mel, K6KBE
- Original Message
From:
I took a lot of time to look, but could not find it in files, photos,
or technical docs. Thanks,
Mel
-- In Repeater-Builder@yahoogroups.com, "Alexandre Souza"
<[EMAIL PROTECTED]> wrote:
>
> >I have a need to throttle down the RF module to properly drive a new
> > post PA. I have not been able t
I have a need to throttle down the RF module to properly drive a new
post PA. I have not been able to find a data sheet on the SAV-15 to
determine the range of control for power output. Anyone got that info?
Cheers,
Mel K6KBE
A couple of ways. 1. Using a NE555 as a timer, circuits are everywhere. 2.
I use a 2N7000 fet and pull in a low current relay on the PTT line. Use a
regulated low voltage to a RC timeconstant you want to the gate. When the
voltage gets at the turn on point (around 2.2V) it will pull in the
00 W better
commercial rigs. Running higher power does not make the repeater hear better,
often hear less, and if you have users running typical 50W rigs why would one
need 350 W. Guess the DX and some users could hear better. Users in noisy
locations would be helped.
73, ron, n9ee/r
>Fr
OK, so I need to boost the power of my repeater from the 25-30 watt
level and went to the Telewave website and found the power rating of
the duplexer at 350 W. I can generate up to 350 watts with my FET
amplifier and it is clean. I can also adjust the power easily to 100
watts. My thinking is ru
Hi Chris,
You might also check the rear of the wood desk. Mine about 39 inches across
between the side drawers. I would make an appropriate band simple dipole of
copper tape and adhere it to the inside up off the floor out of the way of any
metal. You can use thumbtacks to hold the ends to
Hi Chris,
You might also check the rear of the wood desk. Mine about 39 inches across
between the side drawers. I would make an appropriate band simple dipole of
copper tape and adhere it to the inside up off the floor out of the way of any
metal. You can use thumbtacks to hold the ends to
Depending on your core size hole, I have successfully used mini 50 ohm
coax in parallel to make 25 ohm cable. A thought.
Mel
--- In Repeater-Builder@yahoogroups.com, "Chuck Kelsey" <[EMAIL PROTECTED]>
wrote:
>
> Jeff -
>
> I remember seeing your response.
>
> Chuck
> WB2EDV
>
>
> - Origi
Anyone had any experience with this antenna for Valley use, no snow or
ice. Comments appreciated.
I would like to build/buy/convert a 1.2 GHz analog repeater and
repeater link. I have not been able to find a source of factory made
other than an old reference to a old Yaesu unit. I would like to find
any info on building one. FT 541 are very scarce as are any of the
older mobiles that mi
I built one up and while it worked OK with an external preamp, the crystal drift over temp was always a problem even with a wide temp range crystal and to keep the heat in check, I reduced the power to 10 watts. It worked about 95% with the problem above on dead cold and over 105 temp days.
Me
Also call up the local Telco and ask if they have any repeater, yes they call them repeater enclosures being decommissioned. I got two that way, One was about 4 feet high with fan and heater strips and made of Aluminum. No cost. DCFluX <[EMAIL PROTECTED]> wrote:
Hang around the local electric
If you are going to use the PA module at reduced(adjustable) power I would reccomend a linear unit as opposed to a Class C unit. It is designed for a full range of drive without restrictions, (within reason). Less concerns about spurious. Just a thought.Tony Faiola <[EMAIL PROTECTED]> wrote:
In my experience, using a tracking generator and spectrum analyser works fine on "realitively" modest Q circuits. The swept response display picture, is however a function of the detector response and the sweep speed of the generator. That is, the detector display will be deeper as the sweep s
Let's say you don't know the velocity factor, but are going to use the same coax. The easy solution is the ratio of the frequencies. 1.0544 or 5.44% longer. 36" at 155 and 37.95" at 147. na6df <[EMAIL PROTECTED]> wrote:
I'm rebuilding a db-252 corner reflector for use on 2 meters. The origin
Am I missing something or would a change in PL eliminate the other repeater from opening?? I have a similar situation with my repeater and while we are over a 100 miles apart and a mountain range between, occassionly is we open the PL, we can weakly hear the repeater. With the PL activated.
I have another solution. AirPax makes a TO-22 style snap switch in the 6700 series. Can be NO or NC and you can order the temp you want. Newark has them for about $7.50. I would mount it on the stud for the RF device if you can. That way, the temperature of the device is monitored and not
See my posts on the same issue on a 220 MHz converted M2. I did not have the dimming of the LED brightness. Jay <[EMAIL PROTECTED]> wrote:
Hello to all,
I am posting this on both the repeater builders and GE M2 groups in hopes for a reply. My problem is this, I have a GE M2
Actually in the past we installed a 165 degree normally closed snap switch on the heatsink VERY close to the heat source on the high power KLM amps.
Mel, K6KBEian wells <[EMAIL PROTECTED]> wrote:
I have run into the same problem useing maxon pm150 radios as a repeater andi installed a bi
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