Thanks for all of the great information. Since both the TS2000 and IC910H have been around a while I believe that most of their 'problems' have been at least discovered. So, in that respect, I'm leaning away from the "still to be debugged" IC-9100. Also new rigs always are priced high in the beginning of their life, as we all know. I know that some of the ham dealers are offering "Closeout" prices on the 910H but I didn't see much difference from previous pricing.
Not to prolong this thread but Jerry's append (below) brings up another question. How much antenna is "too much" for satellite operation. Someone earlier mentioned that an 11 element yagi might have a beam width too narrow to closely follow an LEO bird. I had planned on using yagis with 13 elements on 2M and 18 els on 70cm. Is that a bad plan?
Thanks again. Tom, KØTW
Hi; I have owned the Ft-736 R and the Ft-847, which I am using now. No matter which rig you decide to buy the most important thing is the antenna system. I use KLM,s with switchers and pre amps. I switch my pre amps off and on from the shack. My 847 has a pre amp built in too. Nothing is better than MAST MOUNTED PRE AMPS THOUGH. If my 847 goes bad I will replace it with another used 847. I also work a lot of HF too. I run barefoot on HF all the time. I also get through all the pile ups because I have a good antenna with gain. Through the years I have made over 15,000 satellite contacts alone. 73,s Jerry w0sat
You know you have toooo much antenna when your neighbor's lights dim when you change AZ or EL.
Stan, W1LE
Tom wrote:
Thanks for all of the great information. Since both the TS2000 and IC910H
Your antenna plan is not bad, you just to make sure that their pointing (direction) are reasonably accurate. The larger the array, the higher the gain, the more narrow the beam width. The 11 element array pointing comment was just to be sure that that individual was reasonably close to the direction of the bird. Off pointed and he could be experiencing the problem he is seeing of not hearing the bird(s). If was meant only as another suggestion to look at.
When I get my rotator fixed, I plan on putting the KLM two meter 22 element and 70 cm 40 element arrays back up. They worked extremely well on AO-7 and the HEOs that once circled the heavens.
Reid, W4UPD
Tom wrote:
Thanks for all of the great information. Since both the TS2000 and IC910H have been around a while I believe that most of their 'problems' have been at least discovered. So, in that respect, I'm leaning away from the "still to be debugged" IC-9100. Also new rigs always are priced high in the beginning of their life, as we all know. I know that some of the ham dealers are offering "Closeout" prices on the 910H but I didn't see much difference from previous pricing.
Not to prolong this thread but Jerry's append (below) brings up another question. How much antenna is "too much" for satellite operation. Someone earlier mentioned that an 11 element yagi might have a beam width too narrow to closely follow an LEO bird. I had planned on using yagis with 13 elements on 2M and 18 els on 70cm. Is that a bad plan?
Thanks again. Tom, KØTW
Hi; I have owned the Ft-736 R and the Ft-847, which I am using now. No matter which rig you decide to buy the most important thing is the antenna system.
I have used a Cushcraft 13B2 (13 elements) on 2m and a Cushcraft 719B (19 elements) on 70cm on the satellites with no problem. Didn't experience either as being too narrow beamwidth for sat use.
73s John AA5JG
--- On Mon, 11/30/09, wrb wrb@bristor-assoc.com wrote:
From: wrb wrb@bristor-assoc.com Subject: [amsat-bb] Re: Icom 910H vs Kenwood TS2000 To: k0tw@cox.net Cc: amsat-bb@amsat.org Date: Monday, November 30, 2009, 2:11 PM Your antenna plan is not bad, you just to make sure that their pointing (direction) are reasonably accurate. The larger the array, the higher the gain, the more narrow the beam width. The 11 element array pointing comment was just to be sure that that individual was reasonably close to the direction of the bird. Off pointed and he could be experiencing the problem he is seeing of not hearing the bird(s). If was meant only as another suggestion to look at.
When I get my rotator fixed, I plan on putting the KLM two meter 22 element and 70 cm 40 element arrays back up. They worked extremely well on AO-7 and the HEOs that once circled the heavens.
Reid, W4UPD
Tom wrote:
Thanks for all of the great information. Since both
the TS2000 and IC910H
have been around a while I believe that most of their
'problems' have been
at least discovered. So, in that respect, I'm leaning
away from the "still
to be debugged" IC-9100. Also new rigs always are
priced high in the
beginning of their life, as we all know. I know that
some of the ham dealers
are offering "Closeout" prices on the 910H but I
didn't see much difference
from previous pricing.
Not to prolong this thread but Jerry's append (below)
brings up another
question. How much antenna is "too much" for satellite
operation. Someone
earlier mentioned that an 11 element yagi might have a
beam width too narrow
to closely follow an LEO bird. I had planned on using
yagis with 13 elements
on 2M and 18 els on 70cm. Is that a bad plan?
Thanks again. Tom, KØTW
Hi; I have owned the Ft-736 R and the Ft-847,
which I am using now.
No matter
which rig you decide to buy the most important thing
is
the antenna system.
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
I am amazed at how many people take things stated out of context on this reflector. I never said that any of the arrays would not work due to being too narrow for satellite work. An individual asked about the problem they were having hearing the satellites and it was stated that if none of the other suggestions worked to consider that the arrays they are using are pointed correctly in the correct direction of the satellite. Pointing being off, the nulls could easily block the satellite's reception. The larger the array the more this might be evident. The larger the array, stacked arrays and even dish antennas, pointing becomes a bit more critical.
Reid, W4UPD
John Geiger wrote:
I have used a Cushcraft 13B2 (13 elements) on 2m and a Cushcraft 719B (19 elements) on 70cm on the satellites with no problem. Didn't experience either as being too narrow beamwidth for sat use.
73s John AA5JG
--- On Mon, 11/30/09, wrb wrb@bristor-assoc.com wrote:
From: wrb wrb@bristor-assoc.com Subject: [amsat-bb] Re: Icom 910H vs Kenwood TS2000 To: k0tw@cox.net Cc: amsat-bb@amsat.org Date: Monday, November 30, 2009, 2:11 PM Your antenna plan is not bad, you just to make sure that their pointing (direction) are reasonably accurate. The larger the array, the higher the gain, the more narrow the beam width. The 11 element array pointing comment was just to be sure that that individual was reasonably close to the direction of the bird. Off pointed and he could be experiencing the problem he is seeing of not hearing the bird(s). If was meant only as another suggestion to look at.
When I get my rotator fixed, I plan on putting the KLM two meter 22 element and 70 cm 40 element arrays back up. They worked extremely well on AO-7 and the HEOs that once circled the heavens.
Reid, W4UPD
Tom wrote:
Thanks for all of the great information. Since both
the TS2000 and IC910H
have been around a while I believe that most of their
'problems' have been
at least discovered. So, in that respect, I'm leaning
away from the "still
to be debugged" IC-9100. Also new rigs always are
priced high in the
beginning of their life, as we all know. I know that
some of the ham dealers
are offering "Closeout" prices on the 910H but I
didn't see much difference
from previous pricing.
Not to prolong this thread but Jerry's append (below)
brings up another
question. How much antenna is "too much" for satellite
operation. Someone
earlier mentioned that an 11 element yagi might have a
beam width too narrow
to closely follow an LEO bird. I had planned on using
yagis with 13 elements
on 2M and 18 els on 70cm. Is that a bad plan?
Thanks again. Tom, KØTW
Hi; I have owned the Ft-736 R and the Ft-847,
which I am using now.
No matterwhich rig you decide to buy the most important thing
isthe antenna system.
Tom,
That is the old standard for satellite operation when we had MEO and HEO sats to work.
Since I have my old antennas that is what I am putting up: 145: 7-element M2 yagi, mgf-1302 preamp, TR relay at tower, 50w FT-847 (about 20w max at antenna). The KLM-22C will replace this antenna once I have re-assembled. 435: M2-436CP42, 50w PA at tower, mgf-1302 preamp, with TR relay to support either mode-B or J 1268: 45-element loop-yagi, 15w Tx converter (DEMI 1268/144) (drives with 2w on 144) 2400: 33-inch dish, helix feed, MK232 LNA, two Drake converters (123 & 435 IF's)
Since these are all narrow beamwidth antennas auto-tracking is desirable. I am using the B5400 az-el rotator with Unitrac-2000, SATPC32
I have all the antennasand the 1268 unit mounted . Dish is next then we swing it all up into place and install the outdoor box with 12v PS and electronics: http://www.kl7uw.com/sat.htm
73, Ed - KL7UW
At 10:38 AM 11/30/2009, Tom wrote:
Thanks for all of the great information. Since both the TS2000 and IC910H have been around a while I believe that most of their 'problems' have been at least discovered. So, in that respect, I'm leaning away from the "still to be debugged" IC-9100. Also new rigs always are priced high in the beginning of their life, as we all know. I know that some of the ham dealers are offering "Closeout" prices on the 910H but I didn't see much difference from previous pricing.
Not to prolong this thread but Jerry's append (below) brings up another question. How much antenna is "too much" for satellite operation. Someone earlier mentioned that an 11 element yagi might have a beam width too narrow to closely follow an LEO bird. I had planned on using yagis with 13 elements on 2M and 18 els on 70cm. Is that a bad plan?
Thanks again. Tom, KØTW
Hi; I have owned the Ft-736 R and the Ft-847, which I am using now. No matter which rig you decide to buy the most important thing is the antenna system. I use KLM,s with switchers and pre amps. I switch my pre amps off and on from the shack. My 847 has a pre amp built in too. Nothing is better than MAST MOUNTED PRE AMPS THOUGH. If my 847 goes bad I will replace it with another used 847. I also work a lot of HF too. I run barefoot on HF all the time. I also get through all the pile ups because I have a good antenna with gain. Through the years I have made over 15,000 satellite contacts alone. 73,s Jerry w0sat
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com 500-KHz/CW, 144-MHz EME, 1296-MHz EME DUBUS Magazine USA Rep dubususa@hotmail.com ======================================
participants (6)
-
Edward Cole -
John Geiger -
Stan, W1LE -
Tom -
w4upd -
wrb