If I order 2 units will they be the same channels?

We did this. It works just fine as long as you don’t turn on 2 mics on the same channel at the same time. So you have to get religious about switching mics off when not speaking. I.e. when a mic is off, it doesn’t just get muted, it stops transmitting. So then if you turn on both (e.g.) channel 3 mics, there are 2 transmitters on nearly the same frequency and it tends to squeak and squawk a bit. That’s why they don’t allow 2 radio stations on the same frequency in a local geographic region. They squeak and squawk bashing against each other at your radio. Oh, BTW this means that you only use 1 of the 2 receiver boxes you bought with each of its 8 channels servicing 2 microphones. So you have a spare receiver box.

Can I connect this unit to PC microphone jack?

Yes. We did that a few weeks ago. You do need the 1/4" to 1/8" adapter of course. But our unit had a lot of hum/hiss in it, rendering it unusable.I'm thinking that cabled versions (shielded cables) might be an option (saw them in Russia recently, ironically).But I decided this is awkward unless you have one mike per person, so I'm looking at sensitive microphones. Some seem to be able to cover large areas. For which a USB interface seems to be suggested, not plug in. Sound cards in PCs seem to not be adequate for good results, I've read - and experienced.

Can the microphones be used to connect to an ipad, which will then be used via a usb mixer, for a google hangouts call?

The microphone receiver has an XLR and a 1/4 inch jack for audio out. As long as your mixer has one of these connectors or you have the appropriate adapter. I connect the mics to my mixer via XLR. At the same time I connect the 1/4 inch jack to an input on a public address system. The mixer connects to a BlackMagic Intensity Shuttle via RCA connectors adapted from an 1/4 inch jack. The shuttle connects to my computer via Thunder Bolt or USB depending on which type I'm using (PC or MAC).

Is there a sleeping mode on the receiver if we don't use any microphone for let's say 2 days? Does the receiver turn off?

Greetings! I have purchased 2 sets of these mics and use a 3rd. (Used in two churches for worship & meeting Zooms, and by our Presbytery for meetings). To my knowledge, the receiver does not have a 'sleep mode'. But to be fair, I don't leave the receiver on, nor do I leave the batteries in the mics, beyond the time they are being used.

ASIN	B003D2O15W
Audio Sensitivity	92 Decibels
Batteries	1 9V batteries required.
Best Sellers Rank	#29,136 in Musical Instruments ( See Top 100 in Musical Instruments ) #348 in Handheld Wireless Microphones & Systems
Customer Reviews	4.0 4.0 out of 5 stars (142)
Date First Available	March 18, 2010
Department	Electronics
Frequency Response	16 KHz
Global Trade Identification Number	00068888901833
Hardware Platform	PC
Is Discontinued By Manufacturer	No
Item Weight	1 pounds
Item dimensions L x W x H	23.2 x 8.5 x 13 inches
Item model number	PDWM8300
Manufacturer	Sound Around
Material	case
Microphone Form Factor	Microphone System
Number of Batteries	1 9V batteries required.
Number of Channels	8
Power Source	Battery Powered
Product Dimensions	23.2 x 8.5 x 13 inches
Signal-to-Noise Ratio	90 dB
UPC	666671552998 134155199941 012304053064 041114899289 763615950800 068888901833 961613263193 012951513690 163120544646 115970905320 031111126082

Pyle 8 Channel Wireless Microphone System - Portable VHF Cordless Audio Mic Set with 1/4" and XLR Output, Dual Antenna, Includes 8 Table Top Mics, Rack Mountable Receiver Base - Pyle PDWM8300,Black

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