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I Purchased -2- VHF SAMSON STAGE 55 WIRELESS  Microphones for 160.00$ each. terrible interferance. What a waste of money

Try a new 9 volt batt in pack  Also does the squelch work?

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Man Must Know His Limitations -Clint Eastwood

Well a VHF system will always be more prone to interference than a UHF system, but the cheaper receivers don't help that along either.

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This is true I was just curious as to what rfi would be causing interference with channel 27 (200.9 mhz) or if it is broadcast noise. We have used wireless mics (vhf) right under the broadcasting  tower with over 500  kw of tv and fm..

Glitches, interference noise, etc.    Can come from overhead lighting and things plugged into the same electrical circuit.     Microwave interference.   Being too close to a bunch of electrical cables from all of your equipment.   The reciver could be too close to them.   If it's a one antenna reciever, throw it away.   But I can get interference noise or dropouts or glitches if the antenna connectors are not tight.   Make sure they are screwed together tight.    Everyone of them.    Also if it's a metal antenna, make sure it doesn't touch anything else that's metal, like the rack or metal edging around the boxes.  As batteries get weak, it could cause a problem.    I have seen the mikes cause interference on a bar TV, if they were too close while singing.     They transmit signal.

Quit buying crap.      Everyone knows good mikes cost $600.   And have two antennas.

Also, interference isn't only on the main frequency. All of the harmonic frequencies can cause interference, although in lesser degree. For example, if you have interference at 200Mhz, it may be from local TV station or it could be from higher frequencies in multiple of the harmonic frequency, such as 400Mhz, 600Mhz etc.

I bought a couple of sets of VHF mics cheap in the past and ended up throwing them away due to interference. So, I bought UHF mics and haven't had any problem since.

I also threw away my wireless video transmitter/receiver because it was operating at frequencies that interfered with it a lot, around 900Mhz (for cell phone and wireless phones area). I found that there are newer transmitters that uses 2.4Ghz or 4.8 Ghz. I am sure they work better but I haven't replaced them since I have gone with LCD computer screens.

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Seize the day and SING!!!

There air around you guys is polluted with too much radio waves. A cheap chinese vhf mic  will function well here where the air is still clean. Just that it sound crappy.

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I can neither confirm nor deny ever having or knowing anything about nothing.... mrscott

Same here... I paid $160.00 I think for VHF the first time I hooked them up I got this loud A$$ Buzz and Hum...I was doing a christmas party for my company. I was just setting up ...Hooked them up Got the Buzz and disconnected them and threw them right in the trash. I know one of the resturant workers saw me trash them and He couldnt wait till He got to empty that Pail.

Ive bought 3 or for UHF since then a few Nady uhf 10's and 16's and an AKG UHF.
The Nady Mic's have been the best Wireless mic's I have bought. they take a beating without depleteing...........I still use them for my Sinatra and Martin tunes.

Nuttin Beats my Corded Beta 58a. for my Classic Rock tunes

I just Picked up this wireless:

http://www.worldmusicsupply.com/mics/wi ... ATW202.asp

I've used it about 10 times in different bars and no problemes yet even works from out on the street in front of the bars. Paid about $160.

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ROBDOG *WOOF WOOF*

If you have ever been awakened by the huge buzz from your tv set because the station has signed off then you have heard a receiver that is running wide open. All receivers have an agc (automatic gain control ) feature that is necessary because the rf signal esp in the vhf uhf range varies from a few micro volts to several thousand. The opposite effect was years ago when a tv buzzed with alot of white in the video. This was agc overload in which the agc wasnt cutting the gain enough.

A wireless mic or any other communications device has the same problems. If the battery in the mic is getting weak (or a long distance from receiver) the agc tries to compensate and as the battery gets weaker and weaker more buzz or even feedback is produced. The secret is knowing the difference between this sound and real radio frequency interference. The interfernce experienced with channel 2 to channel 6 (low vhf) is common at that frequency. Non frequency selective intererference is rare above that unless it is in a close proximity and of a high amplitude.

Also the input sensitivity is super high for these type of receivers ie the ability to pick up noise is high. That requires a squelch circuit to set the gain threshold that varies as conditions vary. It is simply a matter of turning the adjustment slightly past the point where the noise abates. As I have stated before we have used vhf Sony lav mics (vhf) in studios directly below the transmitting tower.  Of course we could design and install filters for the exact frequency. The attitude that a vhf wireless mic, audio or video transmission is always going to have interference is ludicrous. It might be more susceptible but here are a couple of facts concerning uhf. Uhf is more straight line and takes a parabolic antenna. A thousand micro volts of uhf if fed thru 100 feet of co-ax is attenuated to 0 zilch  at that frequency. If a co-ax is bent at a radical 90 degree angle the the uhf goes straight and cant follow the cable. Uhf is hard to work with.. Up in the super uhf (radar, micro wave etc) it really does some srange stuff and is unpredictable..

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My most regrettable purchase was a pair of Peavey Impuse 500 powered subs...The fact they stopped making them after only a year of production makes me not regret giving them away. A wasted 1200 bucks fersure.

Next most regrettable:  Peavey Kosmos ver 1

Next, next most regrettable: Unbalanced BBE

Everything else has proven worthwhile.

PV speakers.   18" subs and 15" and horns tops.    Never again..  

The amp was underpowered for those - if you had the same amp as you have now.  The only Peavey 18" i've blown is from underpowering them.

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Yep, I've got a pair of 600 watt SP2G's that are hard to beat....I give them 600 watts each thru a bridged Peavey CS800S...Sweet

My 400 watt 18" subs get another CS800S bridged at 600 watts each....Too much amp on subs is the right size amp....I can rattle the windows and doors and not hurt them....If you want to hurt Peavey, starve them.

I blew the crossovers in a really nice pair of EV tops using a little 150 watt/channel powered mixer....EV fixed them under warranty and I learned to give them 600 watts each too....Those EV's have been playing 5 nights/week for last 6 years in a bar at ear shattering levels without a glitch.

Those Peavey powered subs were their first try at powered speakers and they were miserable.

How true,  how true!



When I first started out, I blew both my high frequency drivers by not giving enough power to the speaker.  They were rated at 400 watts program, I was feeding them maybe 200 - ***POP***!  They put on a pretty nice smoke show!  Had them fixed the next day with a more powerful amp as well.



They have since made them better, the new powered sub don't even resemble the old style, it's more of a box enclosure with a continuous 1000 watts built in feeding the 15" Low Rider sub in it.  It also incorporates their Kosmos bass enhancer as well.

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what is an unalanced bbe?

The 400 series I believe are unbalanced.  The 800 series have balanced XLR inputs/ outputs.  Most will tell you that unless your entire signal chain is balanced, it really does not make a difference.  I have owned both BBE units and I do prefer the balanced.  I use it at the end of the chain and run the output of the BBE directly to the powered speakers.  Previously when I was using the 482 which was unbalanced, I used the insets on the board.  Now I am using the XLR out directly to the speakers and I am quite satisfied.

Cheers

Hmm lets see.... Just about every dual wireless setup I have purchased has gone bad within say 90 days. The last venture was AS990's the battery terminal in one of the handhelds came off within the first 3 weeks (getting it replaced now) my next purchase is going to be Shure UHF's.

OK Big Dog you were right about this one! I still won't purchase the $600 model but will probably go for the PGX24/SM58 for $299 unless someone can give me a really good reason not to. I have been considering the Sennheiser E100 G2 model as well but it's a bit pricey for me.

Other than that it equipment choices have been really good and the performance has bee exceptional.

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FlipSide Karaoke
Scott

For $299 that's a pretty good deal, lowest i've seen it going for $379.

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