Fw: [LakelandARC] Re: test equipment for rf analysis
Mike Phillips
mostsigbit at yahoo.com
Sun May 22 07:45:16 PDT 2011
I'm in N. lakeland, you? I'm a working stiff, so I'm usually only available in the evenings after 6 or on weekends.
Mike
--- On Sat, 5/21/11, Phil Dentler <k4bhe at tampabay.rr.com> wrote:
From: Phil Dentler <k4bhe at tampabay.rr.com>
Subject: Re: Fw: [LakelandARC] Re: test equipment for rf analysis
To: LakelandARC at yahoogroups.com
Date: Saturday, May 21, 2011, 11:53 PM
Mike...just getting home from a show I ran....you
can bring the stuff out and we can put it on the bench.....Let me know your
sched. Phil
----- Original Message -----
From:
Mike
Phillips
To: LakelandARC at yahoogroups.com
Sent: Saturday, May 21, 2011 11:36
PM
Subject: Re: Fw: [LakelandARC] Re: test
equipment for rf analysis
Phil
I've got two scanners, but they're both
blocked from 512-806MHZ. I didn't pick anything up from 170-174MHZ from
the mic, but didn't really expect to since it is marked UHF.
I've
got a handheld transceiver, but it is only 144-148MHZ, so I cant test
any transmission ranges to the receiver.
Thanks for your help so
far, any else I could try?
Mike
--- On Sat, 5/21/11, Mike Phillips
<mostsigbit at yahoo.com> wrote:
From:
Mike Phillips <mostsigbit at yahoo.com>
Subject: Re: Fw:
[LakelandARC] Re: test equipment for rf analysis
To:
LakelandARC at yahoogroups.com
Date: Saturday, May 21, 2011, 11:58
AM
Phil
Sorry for the delayed response... I'm
not sure what you or Anchor mean conflicting, I thought I posted
in the original message these are 'incompatible'. I want
to know _how_ they are incompatible- eg what did Anchor change,
and can anything be done (by me) to make 'em work. I own
both and therefore can mod both. I observe the mic appears
to have a jtag interface. I suspect the single rx/tx
channel combo where I can receive, it is simply hitting a
harmonic.
Thanks for the info about the freqs, the
receiver is s/n H30000506. The mic is either s/n
0217376374 or s/n C3003792.
I'll try to play with the mic
with my scanner and see what I can see, I don't know why I
didn't think of
that...
Mike
KJ4UKY
--- On Thu, 5/19/11, Phil Dentler
<k4bhe at tampabay.rr.com> wrote:
From: Phil
Dentler <k4bhe at tampabay.rr.com>
Subject: Fw:
[LakelandARC] Re: test equipment for rf analysis
To:
LakelandARC at yahoogroups.com
Date: Thursday, May 19, 2011,
6:19 PM
----- Original Message -----
From: Phil Dentler
To: LakelandARC at yahoogroups.com
Sent: Thursday, May 19, 2011 2:08 PM
Subject: Re: [LakelandARC] Re: test equipment for
rf analysis
Mike more info on the Anchor
unit....you list conflicting models and wh numbers....I know a
tech in Anchor Audio and called him......The eairlier series
used Vhf 170MHZ freqs and the later units used 700 MHZ
for a very short time then they switched to 682 to 698 MHZ
freqs. Sense our HAM radios or a scanner can get to these
freqs. you can scan them for the most part. Triple check the
model and also the serial number is the key to nailing down
what you have.....next step is yours....Phil
K4BHE
----- Original Message -----
From: Mike
To: LakelandARC at yahoogroups.com
Sent: Wednesday, May
18, 2011 9:59 AM
Subject: [LakelandARC]
Re: test equipment for rf analysis
Thanks for responding Phil, here's the info I have on
the Anchor equipment;
The receiver is integrated into
a loudspeaker MegaVox Pro model MEGA-6000U1. It is set to
wireless channel 9.
The transmitter is a hand-held
wireless microphone model WH-3000. With the mic set to
channel 4, with the equipment in close physical range (~5-10
feet)I can get the rx link lights to illuminate on the
receiver and it will demodulate audio as expected. It
doesn't lock onto the signal too well and will lose the lock
often depending on mic orientation.
I cannot find any
meaningful documentation on the mfgrs site, but a call to
their support revealed these are not intended to be
compatible. I don't know if the incompatibility is with the
channel 'codes', modulation technique, or carrier.
I
don't have physical access to the drive-in equipment, but
swear to myself every time I visit the drive-in that I will
bring up the topic here, and finally I'm getting around to
it. If your equipment is at all portable, I'd just like to
give the signal a look-see to see if anything jumps out as
being mis-aligned. I've simply never had a good experience
trying to tune their signal from various locations on the
property using a variety of FM receivers. I figure if I have
problems, everyone else probably does too.
Mike
Phillips
KJ4UKY
--- In LakelandARC at yahoogroups.com, "Phil Dentler"
<k4bhe at ...> wrote:
>
> Mike...good
morning.....I can help you with both.....I need to know the
channel code on both pieces.....this will tell us everything
we need to know about the pieces then we will know the next
move....I have a optoelectronics near field receiver that is
used on my bench. The lakeland drive in transmitter that you
want to see is probably a Ramsy product. I install these and
set them up also. What is the model number and I can tell
you your next move on that also. Phil K4BHE
> -----
Original Message -----
> From: Mike
> To: LakelandARC at yahoogroups.com
> Sent:
Wednesday, May 18, 2011 12:48 AM
> Subject:
[LakelandARC] test equipment for rf analysis
>
>
>
> Greetings
>
> I've
got a 16 channel UHF mic from Anchor anchoraudio.com - and a
16 channel uhf receiver from the same company that are
incompatible according to the mfg. I suspect the carrier
freq is shifted and that's why they're 'incompatible'. There
is a single channel where they kinda work, but not too good.
> I'd like to look at the signals and try to figure
out what's going on. All I've got is a 60mhz DSO. I'm
looking for a spectrum analyzer or whatever you've got and
some RF know-how. Anybody wanna try to help figure this out?
> A separate project; I'd really also like to look at
the FM signal for the lakeland drive-in. I suspect simple
over modulation, but would really like to look at the
signal.
>
> Mike Phillips
>
KJ4UKY
>
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