Blew them out left and right when I was getting started in the business.
There was a calibrated isolator that someone sold to replace the 40dB pad on
the Cushman. Would handle 50 watts(?) for short periods.
WalterH
--- In Repeater-Builder@yahoogroups.com, Eric Lowell elowell9...@... wrote:
Narrowband?
Did you mean 'duplex'?
WalterH
--- In Repeater-Builder@yahoogroups.com, cruizzer77 atlant...@... wrote:
SNIP
In a later step I also need to narrowband the radio, therefore I'm a bit
worried.
SNIP
73
Martin
Yes.
But they need instances of this to be reported, in particular, WHAT ad was
responsible.
Go here and read the posting by Gordon of Yahoo! Groups.
http://suggestions.yahoo.com/detail/?prop=groupsfid=181211
WalterH
--- In Repeater-Builder@yahoogroups.com, Paul Plack pl...@... wrote:
Has
What have you been smoking?
P25 will be in play in the public safety arena for at least another 15 years.
And Tetra is having IPR issues with Motorola and banding issues with the FCC
regarding use in the USA.
There is NO 6.25 requirement. Only an equivalence, just as there is a 12.5
What /I/ can add, is that the FCC has said that if you want privacy for your
communications, then encrypt them. Clear voice is available to anyone with the
appropriate receiver. No, I can't find my source for this, I've read all the
Daily Digests for the last 5+ years, and I believe it was in a
Then it's not COR [Carrier Operated Relay].
It would be RUS [Receiver UnSquelch].
And running any voice station strictly on PL/DPL is a bad idea.
PL [CTCSS] is prone to falsing if it isn't AND'ed with carrier detect.
I have to figure that DPL is better, but random energy from the 'hiss' has got
What's an 'RLC'?
WalterH
--- In Repeater-Builder@yahoogroups.com, NORM KNAPP nkn...@... wrote:
Those are IDA RLC's to Mastr III's.
My bad.
Norm
And what happens if they deploy it in a municipality where there's a 4.9 GHz
mesh network [like Phoenix, AZ]?
Or a 4.9 GHz point-to-point microwave link?
Or in the presence of a 4.9 GHz helicopter downlink?
Frequency selection/coordination is a very big deal, and most of the IT/MBA
types
You mean 'WERE' made by Shure, who no longer makes communications microphones.
GE/ComNet/Ericsson/M-A Com/Tyco/Harris now uses mics from Otto Engineering
http://www.ottoexcellence.com/comm/index.htm
WalterH
--- In Repeater-Builder@yahoogroups.com, Kris Kirby k...@... wrote:
On Sun, 28 Mar
Microwave is NOT 'a band'.
It usually refers to frequencies used for point-to-point RF links.
220 MHz was considered 'microwave' way back when.
As someone else mentioned, there are a NUMBER of microwave bands.
My agency uses 2, 6, 10, 11, and 23 GHz depending on path length, required
bandwidth,
Every place I know of, all you need is a business line.
WalterH
--- In Repeater-Builder@yahoogroups.com, rahwayflynn mafl...@... wrote:
Anyone know if Verizon has a published tarif for repeater interconnects?
(Amateur Radio, not LMR)
Your pic shows the classic signs of an incorrect cable length.
Did you include the effective length of the coupling loops in your calculations?
Our rule of thumb is that they are 1/10th wavelength.
Otherwise, do what EMR does and try cable lengths until it meets specs.
WalterH
--- In
The duplexor referenced is shown at:
http://www.lu3hba.com.ar/ARTICULOS%2010/duplexor%20440%20mhz.pdf
The author's spec a screen shots only show 60-65 dB of notch.
And he doesn't make critical length cables.
WalterH
--- In Repeater-Builder@yahoogroups.com, Larry Horlick llhorl...@... wrote:
Shure got out of the land mobile microphone market 4(?) years ago.
They now only deal in pro-audio.
WalterH
Garbage.
Power is limited to 50 watts out of the transmitter.
Absolutely no ERP limitations.
WalterH WPXP269
Re: [Repeater-Builder] Re: GMRS Radio
Bear in mind that GMRS XMT power is limited to 40 watts ERP.
Dick
Close but no cigar.
What you describe is MTS, Mobile Telephone Service.
All calls were handled by a Bell operator.
This was replaced by IMTS, Improved Mobile Telephone Service.
These channels had 2 letter designations, like YL or JS.
[Interesting note; there used to be a low band phone service,
Single?
Dual?
Frequency [not just band]
Power ratings?
Connectors?
WalterH
--- In Repeater-Builder@yahoogroups.com, K5IN k...@... wrote:
Ok, one last try. I need a UHF isolator and thought I would ask here again.
Brian, K5IN
We also had a problem with a 454 pager.
Quintron with a 1/4 k amp.
Only one in the metro area had a spur, but that one traveled as the PA cage
changed temperature.
Got a hold of the paging company, and they turned each one off until we saw the
spur go away.
Final tube had been replaced and not
These are a new *feature* called 'Update Notification'.
There should be an Unsubscribe button or link at the bottom of the messages.
Or, you can turn them off from the MyGroups page on Yahoo! Groups.
WalterH
PS: I recommend that the owners/mods of this group [or any group] join
'Moderator
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