At 11/18/2022 01:46 PM, you wrote: Zero hangtime?? Nope..I found ~200-400ms max is needed...mobile chop causes the link to go rapidly off/on etc.. horrible...a SHORT hangtime on links smooths out everything.. I've been running zero hang time on my links for decades. The RXs feeding the TXs have Micor squelch so chopping isn't much of a problem. Recently I put a Kenwood TK-880 in link TX service & noticed that short dropouts are more of a problem because, unlike the xtal controlled link TXs I've been using, the TK-880 has a few milliseconds of keyup delay, so a quick 5 ms drop becomes more like 50 ms. So I use a 20 ms hang time & now the link TX never drops on mobile flutter. Bob NO6B
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Re: International crystal manufacturing
Domestic. (+1) is the International Direct Dial Code for United States.?
Bill AT&T Operations and Engineering. ?(retired).?
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On Nov 18, 2022, at 7:16 PM, Chuck Kelsey <wb2edv@...> wrote:
?
Can't remember for sure, but seems like it related to telling the CO
to prepare for toll circuit call???
On 11/18/2022 9:47 PM, Kevin
Magloughlin wrote:
And for extra bonus points, why do we dial 1 when making an
interstate from a wire line phone?
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Re: International crystal manufacturing
Can't remember for sure, but seems like it related to telling the CO
to prepare for toll circuit call???
On 11/18/2022 9:47 PM, Kevin
Magloughlin wrote:
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And for extra bonus points, why do we dial 1 when making an
interstate from a wire line phone?
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Re: International crystal manufacturing
Because one's phreaking box isn't working?
Ken
At 06:47 PM 11/18/2022, you wrote:
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And for extra bonus points, why
do we dial 1 when making an interstate from a wire line phone?
------------------------------------------------------------------------------
President and CTO - Arcom Controllers
Makers of repeater controllers and accessories
Phone: (503) 678 6182
Authorized Dealers for Kenwood and Telewave.
We offer complete turn-key repeater packages!
"We don't just make 'em. We use 'em!"
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Re: International crystal manufacturing
Try 011?31 229 230 044. ?
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Re: International crystal manufacturing
And for extra bonus points, why do we dial 1 when making an interstate from a wire line phone?
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2022 Update - Favorite hardware/SIM option for data/telemetry?
What is everyone's favorite combo of hardware and carrier for IP connectivity to your sites?
Background: We last looked at adding internet to our sites maybe 6 or 7 years ago using hotspots and the free tier of FreedomPOP for a possible DMR deployment. Priorities shifted and we focused instead on upgrading from crystal controlled hardware to our current MTR fleet.
We are rebooting this project now that the RoIP platform appears to have matured. At work we use a combination of Cradlepoint, Sierra Wireless, and Mikrotik hardware for LTE transport. Is there a particular router of choice paired with a reasonable IoT plan that we can deploy without substantial cost? I'm not see much out there on a cursory Google search for free or low cost SIMs anymore.
We have a very early deployment of AREDN in our region, however, it will not be an option for at least one of our sites due to tenant restrictions. We do, however, have excellent 4G coverage at all of our sites for the major carriers.
Thanks :) AJ, K6LOR
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Re: International crystal manufacturing
At 11/18/2022 01:15 PM, you wrote: Bomar??
Oh hell no....poor quality...I threw anything from them away... Ditto here: most of my Bomar crystals have failed & were replaced with either Quartslab (actually Klove from what I've been reading) or Krystaly. Bob NO6B
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Re: Two UHF repeaters sharing the same antenna.
It can be done well, and yes, I have done it well.
See my much earlier post on the subject.
Jim W7RY CETma
On 11/18/2022 7:02 PM, Dan Woodie
wrote:
Can it be done?? Sort of if the frequencies used
are ideal.
Is it a good idea?? NO
Will it perform well?? NO.? It will be a
compromise setup at best, likely with a lot of insertion loss,
desense, or both.?
If you don't have a lot of experience with
tuning filters, access to appropriate filters/isolators, and
the necessary test equipment (VNA, etc) then don't even
consider it.??
You would be better off putting your efforts and
funds into getting the antenna/feedline replaced.
Dan Woodie, CETsr
KC8ZUM
can I put two UHF repeaters on the same
antenna by putting some filtering in between them one is in
business band and the other one is amateur radio band. Just
reaching out there in a group has anybody ever done this
before I've got one antenna that is damaged it appears to
have water in it and the SWR is high.
thanks.
KF4RGR? ? ? ?Keith Ford
--
Thanks and 73, Jim W7RY
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Looking for a PROVEN power supply regulator board design
Dear group,
Any recommendationpower supply regulator board circuit which is tested and proven? I would like to build a pair of 30-40A power supplies for a friend and could use some help
Thanks Alexandre, PU2SEX Enviado do meu Tele-Movel
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Re: Two UHF repeaters sharing the same antenna.
Dan I have to disagree with you!? I have done combining for both UHF and VHF.? Is there loss? Yes, is there loss in any duplexer filter system? Yes!? If done correctly, do they preform well yes!!? It can actually can be beneficial because all frequencies are being taken into consideration.? Not some ham hanging his BPBR duplexer up and hook it to his repeater and his antenna and not paying attention to everything else on the site!? ? I have done this where there was less than 1 meg between one groups UHF receiver and anther transmitter!? Neither saw degradation, why because it was thought out!? Separate master RX antennas and speperate TX antenna, and filtering to accommodate everyone. ? One of my sites has 4 ham repeaters and 2 commercial repeaters on two antennas, no issues. repeater operate everywhere between 420-461 MHz.? same goes for VHF. Losses range from 1.5db to 3.5 db. but better than not having them at all! ? In some places this is only practical, no more space on the tower, cost of another feedline run, antenna or even time might not be possible.? GMRS repeater combining with ham repeaters are a perfect example, one might exist but both could if the correct filtering is done.? Not only that but by virtue of how combiners are build it necessitates ?the use of isolators and bandpass filters which are good practice at any location! ? Does it mean you have to have the right tools sure it does, hammers don’t fix everything. ? As for the damaged feedline, replace or pull it leaving something like that on the tower is just asking for problems PIM etc. ? Jim ?
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From: [email protected] < [email protected]> On Behalf Of Dan Woodie Sent: Friday, November 18, 2022 5:02 PM To: [email protected]Subject: Re: [repeater-builder] Two UHF repeaters sharing the same antenna. ? Can it be done?? Sort of if the frequencies used are ideal. Will it perform well?? NO.? It will be a compromise setup at best, likely with a lot of insertion loss, desense, or both.? If you don't have a lot of experience with tuning filters, access to appropriate filters/isolators, and the necessary test equipment (VNA, etc) then don't even consider it.?? You would be better off putting your efforts and funds into getting the antenna/feedline replaced. ? can I put two UHF repeaters on the same antenna by putting some filtering in between them one is in business band and the other one is amateur radio band. Just reaching out there in a group has anybody ever done this before I've got one antenna that is damaged it appears to have water in it and the SWR is high.
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Re: Two UHF repeaters sharing the same antenna.
Can it be done?? Sort of if the frequencies used are ideal.
Is it a good idea?? NO
Will it perform well?? NO.? It will be a compromise setup at best, likely with a lot of insertion loss, desense, or both.?
If you don't have a lot of experience with tuning filters, access to appropriate filters/isolators, and the necessary test equipment (VNA, etc) then don't even consider it.??
You would be better off putting your efforts and funds into getting the antenna/feedline replaced.
Dan Woodie, CETsr KC8ZUM
can I put two UHF repeaters on the same antenna by putting some filtering in between them one is in business band and the other one is amateur radio band. Just reaching out there in a group has anybody ever done this before I've got one antenna that is damaged it appears to have water in it and the SWR is high. thanks. KF4RGR? ? ? ?Keith Ford
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Re: International crystal manufacturing
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From: [email protected] < [email protected]> On Behalf Of Karl Shoemaker Sent: Friday, November 18, 2022 7:53 PM To: [email protected]Subject: Re: [repeater-builder] International crystal manufacturing ? So, not to be stupid,? my complete keystrokes on my desk pad would be (come off hook, of course)? 01 31 229 230 044 ?
If so, I can't believe I missed that crucial step, considering my background.? No dog bone for me tonight.
Considering the time difference (what? UTC -1 hour) I'll make the call around 3am my time.
Don't get old, it's awful.
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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Re: International crystal manufacturing
Correction, UTC + 1
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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Re: International crystal manufacturing
So, not to be stupid,? my complete keystrokes on my desk pad would be (come off hook, of course)? 01 31 229 230 044 ? If so, I can't believe I missed that crucial step, considering my background.? No dog bone for me tonight. Considering the time difference (what? UTC -1 hour) I'll make the call around 3am my time. Don't get old, it's awful.  -- - Regards, Karl Shoemaker To contact me, please visit SRG's web site at? for the current email address.
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How Many Have Done SPD/ACPR Testing?
This is an informal survey prompted by the recent bandwidth discussion.
There are over 5000 members of this list including many highly technical people.
Some of you must have done this testing.? Please share what you learned.
Attached is an example test of a Motorola APX portable in TIA format.
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Re: International crystal manufacturing
All, Since paper telephone directories are more rare than a chicken with teeth, the internet is your friend. ?
To dial any telephone number FROM the U.S. (international phone call) the first digits you punch in after hearing ‘dial tone’ are “011” to access the outgoing circuits, then the two or three digits of the destination country code, then the destination telephone number. ?
The poster offering “01” almost had it. ? Keep smiling. ?
Dave McBrayer? Auburn, CA?
-- Dave McBrayer? N6OJJ Auburn, CA
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Wow-they want WAAAY too much for those! I can't see going much above $100 for one...
And the one on top in the bottom pic is just a cage with some MastrII cards in it. None of those are for the voter.
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On 11/18/2022 1:34 PM, Karl Shoemaker wrote: So, this is what the guys are talking about for GE?? This is on ebay. I guess I did not remember the two "version" the older, gray one (which I'm somewhat been around) and the newer(?) dark one?
Maybe the latter is after the "old" GE got bought out by M/A comm, or Harris or whatever this month ?? Hold on, I just noticed it says for a Mastr 3???? Woops..............
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at <>
for the current email address.
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That seems reasonable enough. I've yet to find a radio (or band) that I could use to run something continuously like that. Seems it would eventually eat PAs. Like trunked control channel repeaters occasionally do.
Dennis Mills, WB6OIL (SK) engineered a system somewhat like this. It was very unique in that the remote sites were MSF 5000s that received on 443MHz and transmitted on 439MHz. They had a several second hangtime to them and during that hangtime generated 2175Hz over the air. Once the hangtime ran out, the SpectraTAC link receiver at the comparator site would take over the 2175Hz generation into the comparator. There was an ever so slight "tick" when the remote site unkeyed. It worked EXTREMELY well.
I ended up with the comparator and link receivers from that system in a round-about manner when it was decommissioned. Never was able to lay hands on any of the specially-modified MSF 5000 stations though. Man that thing worked well, had a phone patch and everything. Some day I'd like to put it back together.
Transmit site, as I understand it was a 250W MICOR, by the way.
Chris
--
Chris Baldwin, CETSr. (KF6AJM)
Trustee - MetroNET Cal. Intertie (KB3PX)
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Em, not completed yet. I'll take one of
a 2RU box that is nt a drawer, but has the din rails.
Soon.
Tom K8TB
On 11/18/2022 3:20 PM, Eric Grabowski
via groups.io wrote:
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Tom,
A picture is worth a thousand
words. Do you have one you feel comfortable sharing?
73 and aloha, Eric KH6CQ
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Ken Arck AH6LE
Alexandre Souza
Mike Besemer - WM4B
Karl Shoemaker
Chris Baldwin