Ian Hamilton
new member
Joined: 15/10/02
Posts: 969
Loc: Scotland
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Wireless Intermodulation
#928158 - 19/07/11 09:43 AM
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Hi guys,
I've been trying to firm up my RF management and have been playing
with a few of the intermod software.
Does anyone know of any *.sol *.sl2 files
for the UK that can be used with Shure's WB5 to augment their USA tv channel listings?
I'm currently searching through JFMG to find active channels in area then entering
into WB5.
Also are any of you using Spectrum analysers? I'm quite interested in
the TTi PSA1301T, though its serious money.
Thanks
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dmills
Joined: 25/08/06
Posts: 2133
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Re: Wireless Intermodulation
[Re: Ian Hamilton]
#928457 - 20/07/11 12:20 AM
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I have been known to use a spec. analyzer, but mostly because I have the tool available
anyway (A second hand Agilent in my case).
Anritsu, Agilent, Tektronics, Rhode
& Schwartz, Marconi, Wandel & Goterman are the names to conjure with in spectrum
analyzers.
A used Tek 492P would suit well for radio mic work and they tend
to be cheap as these things are measured.
A lot of the radio mics types seem to
favor a 'winradio' computer controlled radio rather then a dedicated spectrum analyzer.
Regards, Dan.
-------------------- Audiophiles use phono leads because they are unbalanced people!
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Ian Hamilton
new member
Joined: 15/10/02
Posts: 969
Loc: Scotland
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Re: Wireless Intermodulation
[Re: dmills]
#928863 - 21/07/11 10:30 AM
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thanks for the reply.
Do you use any particular intermodulation software?
Crikey those Tektonics make some seriously expensive (+20k) scanners!!
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seablade
Joined: 21/11/04
Posts: 3779
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Re: Wireless Intermodulation
[Re: Ian Hamilton]
#928925 - 21/07/11 01:58 PM
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Quote Peter Dakin:
thanks for the
reply.
Do you use any particular intermodulation software?
IN the US IAS from Masque is probably the
'standard' at this point. Not sure about internationally. Likewise in the US there is RF
Guru, which I have been using, which isn't quite as good as IAS from what I have been
told, but is much cheaper and works good enough for me as I tend to do a lot more hands on
anyways and just want a starting point.
Seablade
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Ian Hamilton
new member
Joined: 15/10/02
Posts: 969
Loc: Scotland
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Re: Wireless Intermodulation
[Re: seablade]
#929176 - 22/07/11 10:27 AM
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I've been recommend IAS by a few engineers, however they're all in the states. It isn't
cheap either. SWB5 (shure Workbench) looked good when I caught it at plasa, however
without a device attached it seems limited. Same goes for sennheiser SWM. I was
thinking of getting IAS then using JFMG/OFCom to find active TV channels in a given area,
then simply enter them in manually, in conjunction with a local scanner. Bit of a pain
compared with ease of the FCC database, but the software does seem excellent, especially
when working with a multitude of various wireless gear. Seablade, have you been
using RF Guru for a while? Its another one on my list. I'm on a mac, so can't
download the demos, I'll probably get a little plastic brick in the future if a few jobs
come off, then demo a short-list of software. My normal gig has mixture of old
shure handhelds, sennheiser g2 IEM's and old sennheiser guitar packs, and bits of random
stuff chucked in with supports (trantek and unbranded ch70 stuff). Sadly they are a pain
to get them to play together nicely. Fingers crossed though the new stuff will arrive
soon, however I imagine I'll be forced to use old gear until June 30th 2012, when the big
switch goes "Clunk"!
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John Willett
Sound-Link ProAudio
Joined: 07/03/00
Posts: 11984
Loc: Oxfordshire UK
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Re: Wireless Intermodulation
[Re: Ian Hamilton]
#929959 - 25/07/11 12:14 PM
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Quote Peter Dakin:
Hi guys,
I've been trying to firm up my RF management and have been playing with a few of
the intermod software.
Does anyone know of any *.sol *.sl2 files for the UK
that can be used with Shure's WB5 to augment their USA tv channel listings?
I'm
currently searching through JFMG to find active channels in area then entering into
WB5.
Also are any of you using Spectrum analysers? I'm quite interested in the
TTi PSA1301T, though its serious money.
Thanks
Talk to JFMG as you will need to buy a licence.
If your US
version cannot tune to European Ch.38 then you will have to purchase licenses on a daily
basis (or weekly, or annually) for the specific site. If you are moving around and it
will not tine to the 606-614MHz band, then it will be cheaper to buy a new UK legal system
as the daily/weekly licenses will quickly cost you more than buying a new system.
As for IM-free frequency sets, talk to Sure UK as they will have all the recommended
sets for your system.
-------------------- John - Sound-Link ProAudio
President - Federation Internationale des Chasseurs de Sons
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Ian Hamilton
new member
Joined: 15/10/02
Posts: 969
Loc: Scotland
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Re: Wireless Intermodulation
[Re: John Willett]
#930079 - 25/07/11 04:48 PM
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Quote John Willett:
Talk to JFMG as you will
need to buy a licence.
If your US version cannot tune to European Ch.38 then
you will have to purchase licenses on a daily basis (or weekly, or annually) for the
specific site. If you are moving around and it will not tine to the 606-614MHz band, then
it will be cheaper to buy a new UK legal system as the daily/weekly licenses will quickly
cost you more than buying a new system.
As for IM-free frequency sets, talk to
Sure UK as they will have all the recommended sets for your system.
Hi John,
My post seems have been
a little miss leading. I have no US equipment, it was more a question regarding the IAS
(Intermodulation Analysis System) software from the US and its application in the UK as
the software utilise the FCC database, where as currently there isn't a UK database that
integrates with the IAS software, to help avoid TV broadcasts.
I'm already a
JFMG licensee holder, and all my clients have also, as well as partaking in the
co-ordinated licences for major events as well as having specific license where required.
My interest in the IAS/SWB5 software is I regularly have to co-ordinate a
multitude of frequencies with various equipment and making them play together. Last show
was 8 shure ULX, 6 senny's g2, 3 old senn guitar systems and a couple of ch70 stuff for
the supports.
With current RF climate and the geographical availability of ch38
(+39&40) the scanner/tv database was the plan to make my life that little stress
free. Wigwam have one for hire, so think I'll get one for a play.
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John Willett
Sound-Link ProAudio
Joined: 07/03/00
Posts: 11984
Loc: Oxfordshire UK
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Re: Wireless Intermodulation
[Re: Ian Hamilton]
#930095 - 25/07/11 05:33 PM
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Quote Peter Dakin:
Quote John Willett:
Talk to JFMG as you will
need to buy a licence.
If your US version cannot tune to European Ch.38 then
you will have to purchase licenses on a daily basis (or weekly, or annually) for the
specific site. If you are moving around and it will not tine to the 606-614MHz band, then
it will be cheaper to buy a new UK legal system as the daily/weekly licenses will quickly
cost you more than buying a new system.
As for IM-free frequency sets, talk to
Sure UK as they will have all the recommended sets for your system.
Hi John,
My post seems have been
a little miss leading. I have no US equipment, it was more a question regarding the IAS
(Intermodulation Analysis System) software from the US and its application in the UK as
the software utilise the FCC database, where as currently there isn't a UK database that
integrates with the IAS software, to help avoid TV broadcasts.
I'm already a
JFMG licensee holder, and all my clients have also, as well as partaking in the
co-ordinated licences for major events as well as having specific license where required.
My interest in the IAS/SWB5 software is I regularly have to co-ordinate a
multitude of frequencies with various equipment and making them play together. Last show
was 8 shure ULX, 6 senny's g2, 3 old senn guitar systems and a couple of ch70 stuff for
the supports.
With current RF climate and the geographical availability of ch38
(+39&40) the scanner/tv database was the plan to make my life that little stress
free. Wigwam have one for hire, so think I'll get one for a play.
If you have Ch.38 equipment, then I would
revert to the JFMG recommended frequency set when planning with various different bits of
kit and make sure everyone adheres to that.
If you are on your own, then use
the set recommended by the manufacture of your kit.
For the rest of this year
only, where there are Ch.38 exclusion zones, and you have to use Ch.39 or 40, then, again,
use the JFMG recommended frequency sets - these will be OK for most equipment.
You *have*, by law, to go to the JFMG look-up before using Ch.38 equipment.
The UK is pretty special when it comes to radiomic. frequencies as the law is very tight
about what you can use and where; but when you do it's very much safer to use, with less
interference, than other countries.
For frequency calculators - there is a good
one on the Sennheiser website.
-------------------- John - Sound-Link ProAudio
President - Federation Internationale des Chasseurs de Sons
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seablade
Joined: 21/11/04
Posts: 3779
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Re: Wireless Intermodulation
[Re: Ian Hamilton]
#930173 - 25/07/11 09:26 PM
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Quote Peter Dakin:
I was
thinking of getting IAS then using JFMG/OFCom to find active TV channels in a given area,
then simply enter them in manually, in conjunction with a local scanner. Bit of a pain
compared with ease of the FCC database, but the software does seem excellent, especially
when working with a multitude of various wireless gear.
I think you are the first person in history
that does this that I have ever heard say the FCC database was 'easy' I know
what oyu mean, just it is funny to me.
Quote:
Seablade, have you been using RF Guru for a while? Its
another one on my list.
I'm on a mac, so can't download the demos, I'll
probably get a little plastic brick in the future if a few jobs come off, then demo a
short-list of software.
I have, and have been fairly happy with it, but as of yet have not used it on anything
to large. I think the largest thing I have coordinated with it was a couple channels or
wireless com, and about 24-30 channels of wireless mics, and it has done decent for that.
The downside of all of these to me though is the requirement for Windows, I can't even run
them under Wine typically, especially with RF Guru, so I have to keep a VM around just for
them.
Quote:
My
normal gig has mixture of old shure handhelds, sennheiser g2 IEM's and old sennheiser
guitar packs, and bits of random stuff chucked in with supports (trantek and unbranded
ch70 stuff). Sadly they are a pain to get them to play together nicely. Fingers crossed
though the new stuff will arrive soon, however I imagine I'll be forced to use old gear
until June 30th 2012, when the big switch goes "Clunk"!
The setup I mentioned above is
about 11-17 channels of Sennehiser G2 stuff(10-16 because technically I have Lectrosonics
receivers for 6 channels, and will be going complete Leccy hopefully before to long), and
about 12 channels of Shure ULX and 3 of Shure SLX, combined witha couple channels of Telex
BTR Wireless Com. Nothing fancy, but it did well enough for that, though technically I
don't think I coordinated the Com in RF Guru for other reasons, so I would have to check
it.
I can say that RF Guru worked well enoguh for me in the US, but I can't
speak anything for the UK, Dan(dmills) is a much better resource for that side of the pond
than me. John Willet is a great resource as well(And indeed I bugged him several times
with questions when I first got started coordinating wireless), but obviously goes with
Sennheiser quite often, which can be good but sometimes isn't always the best;) That
being said he is still quite knowledgeable.
Seablade
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Ian Hamilton
new member
Joined: 15/10/02
Posts: 969
Loc: Scotland
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Re: Wireless Intermodulation
[Re: seablade]
#930284 - 26/07/11 09:14 AM
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Quote seablade:
I think you
are the first person in history that does this that I have ever heard say the FCC database
was 'easy' I know what oyu mean, just it is funny to me.
First person to use IAS in UK, or use JFMG
to find active TV channels in geographical areas? By "ease" I meant the Zip search
function in IAS to display local TV stations that might cause interference. No further FCC
database use! 
Quote seablade:
The downside of all of these to me though is the requirement for Windows, I
can't even run them under Wine typically, especially with RF Guru, so I have to keep a VM
around just for them.
Dito. I've given up with parallels/boot camp et al and either borrow a laptop off
someone or do with out. Netbooks are getting so cheap now, I sorely tempted to just get my
hands dirty and get one! 
Quote:
I can say that RF
Guru worked well enough for me in the US, but I can't speak anything for the UK.
Are you based over in the US? Cheers
for the input.
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