[Mich VHF UHF Society] 10 GHz Beacon
Gedas
w8bya at mchsi.com
Mon Jan 10 15:48:40 CST 2022
Chuck do you have an accurate power meter for 10 GHz that you trust? My
problem is I have 3-4 different heads for my 437 meter and all 3-4 read
differently. Between all of them they are within 2-3 dB but it irks me
to death not knowing exactly what the real power level is. I used to
trust my Agilent 26 GHz SA but it reads off from all the heads too and
trust it the least now for some reason. I need to find a known source or
find someone with a known head/meter at 10 GHz.
Kinda like the guy with two watches not knowing the real time whereas
the guy with one does hi-hi.
One thing you need to know abt the Ukrainian beacon board.....their PO
varies greatly with supply voltage. I can find the post if you like but
there was a notable difference between 5.0 VDC and 5.3 VDC when I was
testing mine.
I said my beacon board put out abt 8 dBm but using another head I can
measure close to 11 dBm so maybe I can drive one directly and get the 2W
out.
Or maybe I should just save up for a new 3W DEMI and not use this very,
very old 2W DEMI that needs abt 50mW. Even Steve at DEMI does not have
much info on this early model. And unfortunately my sig gen max's out at
around +12 dBm.
Gedas, W8BYA EN70JT
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 1/10/2022 4:20 PM, Chuck MacCluer wrote:
> Gedas:
>
> The Downeast 3-watter is nominally drivable by 10 dBm, which I think I
> have from the VHFdesign board.
> Will see.
>
> P.S. Is anybody interested in hosting my (built) (30-W) 1296 beacon?
> My location is hopeless for it.
>
> My quite effective 144.288 beacon is shut down until tropo season returns.
>
> Chuck w8mqw
>
>
>
> On Mon, Jan 10, 2022 at 3:58 PM David DeVos via MiVUS <mivus at mivus.org
> <mailto:mivus at mivus.org>> wrote:
>
> Hi Chuck,
>
> Fellow MSU grad here, and alumni of the MSU radio club in 1977! A
> better spot would be at Mark's house WB8TGY which is at a higher
> altitude!
>
> Dave DeVos - KF8QL EN72ew
> 616-278-8068 - mobile
>
>
>
> On Monday, January 10, 2022, 03:49:22 PM EST, Chuck MacCluer
> <maccluer13 at gmail.com <mailto:maccluer13 at gmail.com>> wrote:
>
>
> Gedas:
>
> I now have all the components for a 3-watt beacon (slot, amp,
> exciter) but have not boxed it up. I'm trying to think of a location.
>
> Here on the farm is a nonstarter since I'm hopelessly treed in.
> Maybe I can talk the Mich State Univ AR Club into putting it on
> the roof of the engineering building. They mounted a 1296 beacon
> of mine there for years.
>
> There is also a nearby ham with an ideal location on a hill
> overlooking open farmland to the south. Beautiful clear shot.
>
> I'll keep you informed.
>
> Chuck w8mqw
>
>
>
> On Mon, Jan 10, 2022 at 2:54 PM Gedas <w8bya at mchsi.com
> <mailto:w8bya at mchsi.com>> wrote:
>
> Hi Dave. I am so sorry to hear about the beacons being down.
> But I like that you have plans to get them operational again.
> Beacons are so, so important as you know, esp on the higher
> frequencies. This latest batch of post on the Midwest group
> has made me decide to design up a monitoring/recording station
> starting on 10 GHz. Your beacon and Jim's (N8CEI) are the only
> two possibilities for me. Unfortunately Jim's beacon is down
> as well and he is not eager to climb the 125' tower during the
> winter. I was going to park the dish aimed at your beacon and
> start recording long term FS levels. I think it would be
> fascinating to see the effects local WX has on the received
> beacon levels.
>
> I continue to work on my beacon effort and I hope to have one
> up and running on ".350" by late spring. I just need to find
> an intermediate amplifier to take me from ~8 dBm up to 15 dBm
> to drive this very old 2W DEMI that I have.
>
> Thank you again for all you do and for all your help......stay
> safe es 73
>
> Gedas, W8BYA EN70JT
>
> Gallery athttp://w8bya.com
> Light travels faster than sound....
> This is why some people appear bright until you hear them speak.
>
> On 1/10/2022 2:23 PM, David DeVos via MiVUS wrote:
>> Hello Gedas and Happy New Year!
>>
>> Unfortunately, it went down in December, and I have to climb
>> a tower to fix it. So that's not going to happen until this
>> coming Spring. All (4) bands at that location (1.2, 2.3,
>> 5.7, and 10) are on the same power supply, and automated
>> keyer and they are all down. So that narrows down the
>> problem a bit.
>>
>> I have moved to a new QTH that is more urban, so all my
>> microwave adventures are going to be done while roving. I
>> remain committed to being active, but there is very little
>> VHF/UHF/Microwave activity on the West side of Michigan to
>> speak of other than K2YAZ up in Glen Arbor.
>>
>> 73 and stay active - you are an inspiration!
>>
>> Dave DeVos - KF8QL
>> 616-278-8068 - mobile
>>
>>
>>
>> On Monday, January 10, 2022, 12:01:27 PM EST, Gedas
>> <w8bya at mchsi.com> <mailto:w8bya at mchsi.com> wrote:
>>
>>
>> Hi Dave. Can you please tell me if the Grand rapids 10 GHz
>> beacon is still operating and if so what is it's current
>> freq? Since the Cinci beacon died the only other beacon I
>> might be able to hear under some enhancement is Grand Rapids.
>> I want to do some long term signal plotting of it. TU es 73
>>
>> --
>> Gedas, W8BYA EN70JT
>>
>> Gallery athttp://w8bya.com
>> Light travels faster than sound....
>> This is why some people appear bright until you hear them speak.
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