Hello,
I will be qrv on 2320 and 2304 MHz. Around 09:00 utc.
73
Philippe PIERRAT - F2TU
http://F2TU.perso.orange.fr
Le 23/06/2011 20:11 , Peter Sundberg a écrit :
> Hi Michael!
>
> I will also be QRV on 13cm from 0500 GMT on Friday morning. Will hang out
> around 2320.100, I can RX on 2304 also.
>
> Will be looking for you and also Gudmund SM3BYA. I was on this morning and
> echoes were fair given that we are near apogee.
>
> 73 de Peter SM2CEW
>
>
> At 16:53 2011-06-23 , DL1YMK(a)aol.com wrote:
>> Gents,
>>
>> checked the station, all systems are go, so will be QRV on Friday 24.06. on
>> 13cm from 0500 UT onwards.
>> Hope, there is some activity....
>>
>> vy 73 de Michael in JO33rp
>>
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Congrads to Alex on great advancement in the art of eme.
Just a note that I am endeavoring on a parallel project to achieve
adaptive dual-Rx reception using a prototype DEMI dual-Rx transverter
with 50w+ output. The system converts 144 to 28 which is received by
the dual-Rx in my Elecraft K3 with first IF output to two LP-Pan SDR
which have been modified to run on one LO. The two IQ baseband
signals are processed by a Delta-44 soundcard.
http://www.kl7uw.com/LINRAD.htm
I have been distracted into fixing/upgrading cables in my 144-eme
system so will resume integration/calibration of Linrad very soon (I
have to lower the eme array to gain access to the preamps for RF
calibration test signal input). I will do this during the -dec days
of July 7-18, when the moon is not favorable for my far-north latitude.
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubususa(a)gmail.com
======================================
I solved the connector issue (thanks to Marshall k5QE). I tested
end-to-end cable loss and had shock, getting 1.55 dB vs and expected
0.85 dB. I had previously tested the 45-foot LMR-400 line to be 0.40
dB so know that the loss in the two sections of 7/8 inch hardline
*85-foot total length) is excessive at 1.0 dB (should be 0.22 dB).
One of the 7/8 inch runs came off my 2m-eme tower so pretty sure it
is OK. The other is unknown where it came from. It has the broken
connector center pin, as well. Well good news is I recalled having a
"chunk" of 7/8 inch line cut from my original 2m-eme transmission
line. I only needed 80-foot to feed my 222 & 432 antennas so this
piece was cut off and stored (probably good). I laid it out and I
come up about 7-foot shorter (but I think I will have some extra
length on the LMR-400 cable which will reach).
When the connectors arrive I will install on the "chunk" of
supposedly good cable and we will find out. For now the antenna
matches well thru the existing cable but suffers a loss of 30% of the
input power (OK when running 125w, but losing 300w when running 1kW is not).
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubususa(a)gmail.com
======================================
Dear Friends
Last Antenna Control System DRIACS-G2 available, 4 of 5 already sold in last
48 hrs.
The DRIACS-G2 include:
-A Microcontroller board fully assembled and tested
-A Interface board fully assembled and tested
-A splitter board to connect the Encoders with the interface board via
Network cable.
-A 20x4 LCD display
-2 MAB25 12 bit encoders
-Shipping and handling to your QTH via Swiss Priority postal service.
Look in : http://www.qsl.net/oe5jfl/ant_cont.htm
This is a standalone system, you don't need a PC to control AZ/EL in your
antenna.
What is not included:
-A Metal box to host the electronics
-A UTP Level 5 network cable to interface the encoders
-A 10 to 12 VDC power supply 500ma
If you are interested contact me direct, this is the last unit available
now. My Lab is dedicate to IQ+ (SDR radio for Adaptive Polarization) and I
will not have time to build new Antenna Controllers during the next months.
73 de Alex, HB9DRI
Rain slowed my progress but the antenna is tuned to 50.250 MHz (z =
52+ j0) with SWR <1.1, 50.100-50.480 MHz. The driven element length
was exactly 50.25 inches on each side as predicted in K6MYC's
design. The hairpin loop is 17.5 inches long (end-to-end).
I connected the transmission line and discovered that one of my NF
connectors on the LDF5-50A (7/8-inch) hardline is broken (center
female pin is half gone). So I will have to replace that to run
QRO. It tests OK at 8w, but the RF current is low at that level. It
might work OK at 125w but I will have to measure the line loss.
Hope wx cooperates so we can raise the antenna to 20-feet and guy it tomorrow.
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubususa(a)gmail.com
======================================
The number FD-1029-FT is an old GTE house number. The substitute can
usually be found on NTE lists.
This appears to be a NTE3203A. a 33 volt 10 amp stud mounted unit.
Good luck
Jim Hain
W2IMY
hello group,
I've decided to take the advice from some of the list members and install a pre-amp at the antenna. On TX, I'm currently only running 500W output, but hope to upgrade to 1500W before the end of the year.
I have in my collection of parts a tohtsu CX-600NL and a CX-140D. The CX-600 is rated to 800W with 35 db isolation and 0.1 db insertion loss at 500MHz while the CX-140D is rated to 250W, 47 db isolation and 0.15 db insertion loss.
I'm wondering if this would be a good combination to use the CX-800 as the power relay and the CX-140 as the second input relay which shunts to a 50 Ohm load during transmit. I would assume the isolation would be at least additive for the two relays to provide 87 db isolation to the input of the pre-amp.
This setup would then mean I have a separate RX line down from the antenna system. I'll need to somehow route this to the receiver. Since I won't be using the TX coax for receiving, I was thinking I could plug the RX coax into the "bypass" or exciter side of the amplifier. The TX power amp has the same setup, a CX-600 on the output side with a CX-140 on the exciter side.
Does this sound like it would work or are there other suggestions?
Thanks,
Paul, kg7hf
Joe helped me so very much during my early 1990 tentatives to become an EME'er on 70cm.Our last qso was a
couple of weeks ago during the 23cm Dubus event when he called me with his big 589 signal.The sad news brought tears to my eyes and I will forever remember him for the great friend and Eme'er he was.
Rest in peace Joe.
Don PY5ZBU
Thought I’d pass this along to the net. This was an email received from Joe just last Friday regarding my dish foundation. I had a few follow-up questions for Joe but I had limited internet access up in the mountains so I waited until Sunday when I got back to Raleigh. Joe was always very helpful to others and we will all miss his advice.
Guess I will never work Joe on 1296 but he had a huge signal on 432Mhz so am very thankful of working him many times and meeting him in person at various conferences.
RIP, Gary N8CQ
From: K1rqg(a)aol.com [mailto:K1rqg@aol.com]
Sent: Friday, June 17, 2011 8:45 AM
To: gabercr(a)nc.rr.com
Subject: Re: Eimac 8877 clip
Gary
Ok on the clip, no problem there. Regarding the foundation, the reason for
mine being the way it is, is because it is on ledge. I dug down to the ledge,
cleaned it off, drilled a number of holes in the ledge about 12" deep and put
2' of rebar in vertically. Then (of course with much rebar) poured a slab 13'
square and 18" deep, again with 8' of vertical rebar, then poured the final
foundation and I think that is 5x5x7 for about a total of 15 yards of concrete.
If I remember right, my tower section (also 20') has 4 bolts per flange and
I made up 3 groups of 4 6 foot 3/4" rods with steel spacer plates. Anyway,
it has survived winds over 90 mph except for the original mount that failed.
So to answer the question of why mine is out of the ground, it is because
it sets on ledge and anchored to it as well.
73 de Joe
In a message dated 6/17/2011 7:58:57 A.M. Eastern Daylight Time, gabercr(a)nc.rr.com writes:
Joe,
Thank you so much for the 8877 clip. I have been looking everywhere for one of those. Found lots of tubes, no clips.
Headed back to the mountains today to have dish foundation hole dug. The backhoe and bulldozer are doing final grading on the driveway today so need to get this done now. I noticed that you built up your base foundation several feet or so out of the ground. What was the reason for this? I notice that street signs are done the same way.
I am making a guess as to the foundation size required after looking at your website, K5SO, KL6M, SM4IVE, OK1DFC and Rohn SSV foundation specs. I am using (6) 1” anchor bolts which attach to the single 20’ tower section. I am thinking about having the 6 anchor bolts interconnected with two 1” steel plates along with the rebar cage. I see you made a similar anchor bolt assembly on your dish also.
Gary, N8CQ
