Dual Freq./ send and receive at the same time.

[Hirschkorn]

Hay guy's I am looking at getting my buddys and I some HT's for hunting and fishing. We also want to use them for huge Paintball games. We want to be able to Send and receive on 2 different Freqs. at the same time I have only found one radio that clams to do so..

Also what Lic.. would you all suggest. For us all to get.

 

[gewecke]

Technician class ham radio license will do it! :wink:


73,
n9zas

 

[Hirschkorn]

OK now just to find a radio besides the IASUS brand dual comm...

 

[gewecke]

Hamradiooutlet.com and others have tons of dual band talkies capable of full duplex and semi duplex comms.
Also check aesham.com

73,
n9zas

 

[Hirschkorn]

And they will send and receive one 2 diff. Ferqs. at the same time ? Iasus call's it a 4-way.. I will post spec's here in a bit.

IASUS Dual Comm Radio
Price: $199.00
Shipping Weight: 1.90 lbs
Please select a valid combination of attributes.
An option must be selected for Voltage.
Quantity in Basket: None


The IASUS Dual Comm Radio is a unique 4-way UHF radio communication device designed to optimize use of IASUS NT3 Throat Mic Systems. It is the world’s first commercial portable 2-way radio that is able to operate on two different 1/2 duplex systems, effectively rendering it a 4-way radio. The IASUS Dual Comm Radio can simultaneously monitor and communicate with two independent groups of 2-way radio frequencies – perfect for coordinating multiple independent communication groups.

Professional four-way radio communication for airsoft/scenario paintball, outdoor recreation, work sites, and emergency and law enforcement operations.

The IASUS Dual Comm is not your average two-way professional UHF radio. The Dual Comm is capable of operating on two different ½ duplex systems, effectively rendering it a four-way radio. This unique system allows you to monitor and communicate with two independent groups of two-way frequencies, making the Dual Comm the ideal system for coordinating multiple groups. Built to U.S. military standards for shock, vibration, rain, and dust with a weatherproof die-cast aluminum chassis, the IASUS Dual Comm has the power and the durability to perform under the harshest conditions.

Dual Com Standby

• 5 km range
• Rechargeable lithium battery

• Water Resistant
• 4W Output Power

• 50 CTCSS
• 104DCS Normal/Inverted Selectable

• Backlit key pad
• 128 programmable groups

• Built-in FM radio receiver
• Scrambler

neral
Frequency range 136-174MHz 350-390MHz, or 400-470MHZ (only one set of frequency per radio)
Working Temperate -20°C~ +50°C
Operating Voltage DC 7.2V
Operate Mode Simplex or Semi-duplex
Dimension 59mm (W) * 119mm (H) * 34mm (D)
Weight 220g including battery

Transmitter
Frequency stability ±2.5ppm
Output power ≤5W
Max Frequency Deviation ≤5KHz
Audio Distortion ≤5%
Modulation Character +3dB~-3dB
Adjacent Channel Power ≥65dB
Spurious Radiation ≤7.5µW
Occupied bandwidth ≤16KHz

Receiver
RF Sensitivity <0.20µV
Audio distortion ≤5%
Audio response +2dB~-10dB
Adjacent channel selectivity ≥60 dB
Intermodulation rejection ≥60 dB
Spurious response ≥60 dB
Blocking ≥85dB

 

[gewecke]

And they will send and receive one 2 diff. Ferqs. at the same time ? Iasus call's it a 4-way.. I will post spec's here in a bit.

What you're describing is full duplex, as on a cell phone.But if you were to transmit on 1 frequency and receive on a different frequency, this would be known as semi duplex.
I have no idea what you mean by "4 way"??

73,
n9zas

 

[Hirschkorn]

Say you and 4 others are on 462.xxxx and me and 4 others are on 452.xxxx we can key up and talk with in our group. Or we can key up and talk to all 8. even with half being on a completely different Freq.

 

[gewecke]

Say you and 4 others are on 462.xxxx and me and 4 others are on 452.xxxx we can key up and talk with in our group. Or we can key up and talk to all 8. even with half being on a completely different Freq.

Um ok, well I just read the manual and I don't see the radio as anything other than just another vhf/uhf ham/hybrid chinese knockoff with a few odd features.
It does have dual display for both bands just like a wouxun but other than that this is NOT a "tactical public safety radio".
But have fun with it.

73,
n9zas

 

[nd5y]

Say you and 4 others are on 462.xxxx and me and 4 others are on 452.xxxx we can key up and talk with in our group. Or we can key up and talk to all 8. even with half being on a completely different Freq.

It is physically impossible to have 8 people with full duplex FM radios all be able to work eachother at the same time.
You can only have one FM transmitter on the air at a time on a particluar frequency.
If you have a group of people all in the same area and two or more transmitters are on the air at the same time then nobody would be able to hear either one. All anybody would hear is garbled interference unless somebody was close enough to one of the transmitters and far enough from the other that the FM capture effect occurred then they would only hear the closest transmitter.

 

[nd5y]

And they will send and receive one 2 diff. Ferqs. at the same time ? Iasus call's it a 4-way.. I will post spec's here in a bit.

IASUS Dual Comm Radio
Price: $199.00

I was curious about this and tried to find some info.
I found this Youtube video Iasus UHF radio - YouTube
I looked up the certification number on the label (CMII ID:2006FP2013) shown in the video and it appears to be for a Weirwei VEV-3288s which has the same ID VEV-3288S - YouTube
It doesn't have a FCC ID so it as far as I can tell it isn't even legal to use in the US.
It doesn't say anything about being able to transmit on two frequencies at the same time.
It probably just has the dual-watch function with two frequency display just like some of the other Chinese radios.
It looks to me like Iasus had a $76 radio customized for them and sell it for $199.

 

[Hirschkorn]

Yea they work on a half duplex not a full.. I am guessing these are not really used in the ham market, and are more of a Mil,LEO and SWAT market.. I will just drop the 200.00 each for the one's I have posted the info for.

Thanks.

 

[nd5y]

I will just drop the 200.00 each for the one's I have posted the info for.

Thanks.

Seriously? You would pay $199 for a $76 radio and buy it from a company that doesn't even list a phone number or mailing address on their web site?
I guess P.T. Barnum was right.

 

[Hirschkorn]

I have bought many things from there dealer before. Other wise not a chance in hell.. I didnt get welthy and retired at 37 by being that kind of stupid.

Seriously? You would pay $199 for a $76 radio and buy it from a company that doesn't even list a phone number or mailing address on their web site?
I guess P.T. Barnum was right.

 

[gewecke]

Yea they work on a half duplex not a full.. I am guessing these are not really used in the ham market, and are more of a Mil,LEO and SWAT market.. I will just drop the 200.00 each for the one's I have posted the info for.

Thanks.

That radio would not even be considered as reliable by a public safety or a mil agency, but maybe beginning hams might consider it.
Does the phrase "snow job" come to mind?

73,
n9zas

 

[gewecke]

I have bought many things from there dealer before. Other wise not a chance in hell.. I didnt get welthy and retired at 37 by being that kind of stupid.

welthy?



73,
n9zas

 

[Hirschkorn]

Retired at 37 drawing 90k a year is not rich just wealthy. .

 

[gewecke]

Retired at 37 drawing 90k a year is not rich just wealthy. .

Lol, yeah me too but I'm a tad bit older and more humble about my wealth!


73,
n9zas

 

[reedeb]

Retired at 37 drawing 90k a year is not rich just wealthy. .

Oh brother!! WHY go thru the bother of having TWO frequencies. ANYONE with a scanner can still follow your comms.[done it for years with Cab Companies] Simple code words work better.

 

[Hirschkorn]

Yea after using Google. I will just buy some Puxing's. Now today's goal find the ham club for my town.

 

[krokus]

Just for clarification:

1) Did you want to key up two frequencies at the same time, or just have them both available?
2) Why have the people on separate frequencies?

If the second half of #1, Kenwood has had this available for years. My TH-78, which I purchased in 1994, does this. The TH-D72 and TH-F6, both of which I purchased at Dayton over the weekend, will do the same thing. (This is just the handheld models; my mobiles do the same thing.) I know other companies have radios that do this, but I do not follow their product lines that closely.