Icom IC-T90 Tri Bander REVIEW BY JIM BAUDO N0UQZ

AVAILABLE NOW 8/20/02

New ICOM IC-T90A Tri-Bander Lets Hams Get Back to Basics  ICOM PRESS RELEASE
IC-T90BELLEVUE, WA (August, 2002)– ICOM America, Inc. announces the IC-T90A, the latest addition to their multi-band hand held line. This palm-size wonder takes amateur radio operators back to the day when radios were simple to operate and designed to last for many years. Constructed in a die-cast aluminum chassis with oversized buttons, the 'T90A is perfect for hams who want a small radio that doesn't sacrifice operating performance, comfort and functionality.

In the quest to provide more in a smaller package, ICOM did not compromise performance, as the 'T90A offers plenty of talk power! A full 5 watts on 6m, 2m, and 70cm is possible from NEW MOSFET technology along with the 7.4 V Li-Ion Battery pack. "Our in-field tests have seen 5-6 hours of operation from the 1300 mAh battery pack" reports Ray Novak, KC7JPA, National Sales Manager for ICOM America's Amateur division.

If you ever get tired of chatting on local repeaters, the 'T90A also includes a Wide Band Receiver covering .495-999.990 MHZ (cellular blocked). Choose from either AM, FM or WFM operation for hours of additional enjoyment. Whether you are camping, hiking, or just taking a break from the job, don't miss your favorite television shows or late breaking news with pre-programmed TV stations!

For those needing emergency communications, the IC-T90A is capable of multiple signaling with DTCS and CTCSS. Along with encode and decode operation, the 'T90A can identify what is being used with the tone scan function.

There is plenty of memory to store all your favorite channels with 555 alphanumeric memory channels. The channels are split into 500 regular memory channels, 50 scan edges, and 5 call channels. The 50 scan edges form the upper and lower limits for the scanning ranges, perfect for splitting up the spectrum into small ranges.

The 'T90A gives you the ultimate in memory scanning management with Dynamic Memory Scan (DMS). ICOM's exclusive DMS allows you to pick and choose any of the 450 memory channels you want to scan! Soft partition memory provides the DMS with a maximum of 18 banks or 100 channels per bank. No other multi-band hand held offers so much in scanning flexibility as the ICOM IC-T90A.

For the active ham, the IC-T90A makes the perfect weather radio! With ICOM's weather alert, the 'T90A checks the active weather station for NWS alert activity; even while monitoring local repeater communications! When an emergency occurs, the IC-T90A will automatically switch from an active channel to the weather channel and an audible signal will indicate that an emergency signal has been received.

Although the front panel programming is very simple, the optional computer software makes programming even faster. Completely customize the memory channels, alphanumerics, scanning lists and operation parameters using the power of your PC.

Novak comments, "The ICOM engineers did an incredible job putting all these features into such a small package and keeping the radio very simple to operate."

SIDE VIEW TOP VIEW

RAIN PROOF & BRIGHT BACKLIGHT

With 3 band + broadband receivers worldwide smallest
1 * most light weight actualization * 2 .

Broadband technology of eye COM made possible, the ultimate compact body (the 58w x 87h x 29dmm) the 50MHz + 144mHz + 430MHz + broadband receiver (0.495 - 999. 990MHz, the part frequency band loaded is excluded). Of worldwide smallest * the compact body most light weight, transmission output in the lithium ion battery pack of standard equipment, both 3 bands guarantees the 5w with room. In addition, common use conversion of each stage is assured and in addition to the adoption of 3 band custom PA which concentrate the choice of broadband technology of eye COM, basic efficiency and the cost performance of wonder which are stabilized are actualized. Regarding operativity, it equips the ten-key board and the band selector switch, reaching, it can do, operation such as selection * setting of each functional group and direct input of frequency simply.

* 1: Presently of June of 2002, at capacity ratio of the substance
* 2: Present time the of June of 2002



Main feature
- Of worldwide smallest * the body size most light weight.
- The broadband receiver (0.495 - 999. 990MHz *) it loads in 50 + 144 + 430MHz tranceivers. * The part frequency band you exclude
- It actualizes high power 5w output in the battery pack of attachment.
(50 / 144 / 430MHz band)
- To repeat and force to charge, the lithium ion battery pack the standard equipment 。
- Although being the multi-function machine, it actualizes simplicity operation. 

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* Worldwide smallest * most lightweight
Although guaranteeing 5w output by the adoption of the original PA and 3 dimensional arrangement of each part, it actualizes the compact size of the 58w x 87h x 29dmm. The body using aluminum die-cast, guarantees strong characteristic. Furthermore, it supports outdoor being JIS protective class 4 (spray-proof type) with suitable structure, active use, the a little rain and the water spray * does not become matter of concern. In addition, SMA type is adopted to the antenna and airtightness is raised.



* When using the speaker microphone and the headphone et cetera of option you exclude


* 3 band + broadband receivers
Although 50 / 144 / loading 3 bands of the 430MHz band, 0.495 - 999. 990MHz (you exclude the part frequency band) the compact body (you exclude 58w x 87h x 29dmm * projection ones) it builds in the broadband receiver which is covered with FM / the WFM / AM with the next generation broadband technology. While enjoying the amateur radio at this one unit, it can receive from various broadcasts to the utility radio.

* Also 3 bands installed capacity 5w actualization
It actualizes the largest transmission output 5w in the lithium ion battery pack of standard equipment with the adoption of the original PA which uses broadband technology in 3 bands of the 50MHz band, the 144mHz band and the 430MHz band. In addition, because it corresponds to the sudden battery being cut off, the electric battery case (single type 3 alkaline electric batteries x for 2) it has belonged. It is possible even with when this electric battery case is used to use with output of approximately 100mW.

* Broadband receiver loading
0.495 - 999. 990MHz (the part frequency band is excluded) loads the broadband receiver which is covered. Mode corresponds to FM / the WFM / AM. The FM radio and the short wave radio, TV sound, the air band, it can cover each amateur band of course to various utility radios.

* Lithium ion battery pack standard attachment
The lithium ion battery pack which the cycle life which is superior and is strong in repetition charge, does not have the memory effect (7. 4v / the 1300mAh) standard equipment. Coupled with the original PA of 3 bands, the high output which it stabilizes it actualizes long battery life.

* Simple operation design
In order to assure the improvement of operativity, the band selector switch, the ten-key board (the back light to be attached) it equips. In addition to band change and the direct input of frequency, direct of the memory channel it calls, can execute the access of each function simply. The knitting machine although loading many functions, is proud of the operativity which excels.

* Tone squelch / pocket beep (R) function
Pocket beep (R) function and tone squelch function standard equipment. Give the tone function, difficult option unit you do not install, comfortable tone squelch use is possible directly in the CPU. Of course, becoming independent, it can set the tone frequency of tone squelch and the tone frequency for repeater access. Furthermore, standard it equips also the DTCS function which can be applied to also individual call function.

* Large capacity channel 555 memories
Usually memory the 500ch and scan edge memory 25 set 50ch, the call channel loads the memory channel of the total 555ch of the 5ch. In addition, to load 18 memory banks, per 1 bank be able to register to the largest 100ch, it can do also memory management easily. Of course, in each memory channel alphabet to 6 letters which are convenient to the memory of use and the like, it can acquire comment with the number and the sign.
SOFTWARE IS AVAILABLE AS AND OPTION AND USES THE OPC 478 COMPUTER CABLE
* Colorful scan functional group
I order for us to answer all user needs, the colorful scan functional group is equipped.
- Full VFO scan
- Full VFO skip scan
- Program scan
- Program skip scan
- Band scan
- Full memory scan
- Full memory skip scan
- Memory bank scan
- Memory bank skip scan
- Priority scan
- CTCSS decoding scan
- DTCS decoding scan

* Other high functional groups
- FM narrow mode
- TV channel mode (1 - 62CH and fixing)
- VFOA / B change
- RIT function 
- Split function
- By the dial the rotary type tuning system
- Dial speed variable function
- Electronic type volume of independent switch
- Automatic squelch
- DTMF memory of 16 column 10ch
- Tuning step of 12 types to change
- Automatic mode & automatic tuning step function
- Squelch monitor
- Automatic power saving
- Timer equipped LCD & keyboard back light
- TX / BUSY lamp
- Microphone remote control function (HM of option - at the time of 75A use)

* Accessory
- Antenna (FA - S6270D)
- Lithium ion battery pack (BP - 217 < 7. 4v / 1300mAh >)
- Battery cases single three shape alkaline electric battery 2 (BP - 216)
- Spread type battery charger (BC - 74j)
- Belt clip

* Colorful option
* BC - 139: Quick charger
* BC - 74j: Spread type battery charger (for repair)
* BP - 216: Battery cases single three shape alkaline electric battery 2 (for repair)
* BP - 217: Lithium ion battery pack (BP - 217 < 7. 4v / 1300mAh >) (for repair)
* CP - 19: Noise filter equipped cigarette lighter/writer cable
* HM - 54: Speaker microphone
* HM - 75A: Remote control functional equipped speaker microphone
* HM - 131: Small-sized speaker microphone
* HS - 85: VOX equipped headphone
* LC - 152: Carrying case (BP - 216 / BP - for 217, MB - as for combined use with 83 failure)
* MB - 83: Rotary type belt clip
* SP - 13: Earphone

* New option & former option

 

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One
Carrying
SI
Way

Frequency range

Sending and receiving
50 - 53.995mHz 、 144 - 146mHz 、 430 - 440MHz

Receiving trust
0.495 - 252.895mHz

255.1 - 261.895mHz

266.1 - 270.895mHz

275.1 - 379.895mHz

382.1 - 411.895mHz

415.1 - 809.895mHz

834.1 - 859.890MHz

889.1 - 914.895mHz

960.1 - 999.990MHz

The reception guarantee range, the inside 1.625 - the 999.990MHz and inside the above-mentioned frequency range limits

Radio wave type

FM and AM (only reception), WFM (only reception)

Memory channel number

Total 555 (the scan edge and the call channel are included)

Antenna impedance

50 Omega unbalanced

Antenna terminal

SMA type

Power source voltage

DC7.4V standard, DC5.5 - 11v connected yes (external power source terminal)

Common configuration

Negative ground

Consumed electric current (at the time of 8.0V) (TYP)

Time of transmission
HIGH (at the time of 5w) /2.0A (50/144/430MHz)
LOW (at the time of 0.5w) /0.8a (50/144mHz) 、 1.2A (430MHz)

Time of reception
Rated output 220mA
At the time of power saving mean value (1:4) 65mA

Category temperature range

-10 DEGC - +60 DEGC

Frequency stability

±6ppm (-10 DEGC - +60 DEGC)

External size

58 (W) the ×87 (H) the ×29 (D) mm (projection ones are excluded)

Weight

Approximately 240kg (at the time of antenna and BP-217 installing)

Sending
Trust
Section

Transmission output

HIGH/ approximately 5w, LOW/ approximately 500mW 2 stage to change

Irregularity system

Reactance irregularity

Largest frequency deviation

±5.0kHz

スプリアス discharge strength

-60dB or less

Microphone impedance

2k Omega

Receiving
Trust
Section

Reception system

Doubles - per heterodyne

Intermediate frequency

1st 69.450MHz (FM/AM), 13.350MHz (WFM) 2nd 450kHz

Reception sensitivity (TYP)

FM (12dB SINAD)
1.625 - 4.995mHz -8dB µV

5.000 - 49.995mHz -15dB µV
50.000 - 54.000MHz -16dB µV 54.005 - 143.995mHz -15dB µV
144.000 - 148.000MHz -16dB µV 148.005 - 221.995mHz -8dB µV
222.000 - 225.000MHz -10dB µV 225.005 - 246.995mHz -8dB µV
247.000 - 429.995mHz -10dB µV 430.000 - 450.000MHz -16dB µV
450.005 - 832.990MHz -10dB µV 833.000 - 999.990MHz 0dB µV

WFM (12dB SINAD)
40.000 - 108.000MHz 0dB µV 470.000 - 770.000MHz 10dB µV
175.000 - 221.995mHz 5dB µV

AM (10dB S/N)
0.495 - 4.995mHz 2dB µV

5.000 - 29.995mHz -5dB µV
118.000 - 136.000MHz -6dB µV 222.000 - 229.995mHz -2dB µV
320.000 - 329.995mHz 0dB µV

Selectivity

Above /-9dB 15kHz and below /-50dB 30kHz, (FM 、 cAm)

It is low frequency output (the TYP)

0.2w (8 Omega load  +25 DEGC time)

It is low frequency load impedance

8 Omega

The eye COM corporation, eye COM, ICOM logograph, pocket beep is registered trade mark of the eye COM corporation.
* Rating the JAIA (the Japanese amateur radio equipment manufacturer's association) depends on measurement method.
* There are times when it modifies as for rated * specification * appearance and the like

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PROGRAMMING MEMORY BANKS BY JIM , NØUQZ

Each bank can hold up to 99 channels. Therefore, you have to plan ahead as to how you would like to organize the frequencies you will program into the radio. How you lay this out will depend on your needs. Once I  haVE DECIDED all the channels TO BE programmed, I then set about assigning them to certain banks. Remembering that each channel can only be assigned to ONE bank I found myself programming some frequencies into more than one memory channel so I could put them into more than one bank.

If you take the time to plan ahead, you should be able to devise a
scheme that will suit your needs. The T90A has the flexibility to
allow you to do just about anything you want.

the T90A already has weather and many VHF/UHF TV channels already programmed in so don't waste any memories on those frequencies unless you have an unusual need to scan, call or monitor them without all the button pushing required to get there.

MY RECOMMENDATION IS TO FIRST PROGRAM IN 2 METERS IN A BAND AND THEN 70 CM, FOLLOWED BY 6 METERS. MY LOGICAL WAY OF PROGRAMMING IS FOR EASY RECALL OF THE MEMORY CHANNEL IS TO PUT 146.82 IN MEMORY 82, 145.115 IN MEMORY 11 147.39 IN MEMORY 39 AND SO ON. THIS ALLOWS INSTANT RECALL WITH VERY LITTLE TO REMEMBER AS FAR AS WHAT FREQUENCY IS IN WHAT MEMORY CHANNEL NUMBER.

ENJOY. IT IS PACKED WITH FEATURES. 73 JIM.  EMAIL ME YOUR COMMENTS. N0UQZ@YAHOO.COM

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EMAIL I HAVE RECEIVED WITH COMMENTS: 
"anjum_sohail" <anjum_sohail@hotmail.com>

Date:Fri, 06 Sep 2002 15:13:23 -0000

Subject: Icom IC-T90] Radio Shack new HT, HTX-420

Just of the topic. Is any one noticed that Radio Shack released the
new Dual band HT called HTX-420, with 100 memory channel. The price
tag is US $270.

I think price is too high comparing to the newly release of ICOM IC-
T90A tribander, with full 5 watt out put on all 3 bands,
0.495-999.990MHz wide band receiver, long life Li-Ion battery pack,
Total 555 memory channels, 14 varieties of high speed scan, 104 DTCS
and 50 CTCSS code and 2 VFO (A/B) for split frequency operation.

With lot of scanning option for IC-T90A as follows.

Full VFO scan
Program scan
Band scan
Full memory scan
Memory bank scan (DMS)
Priority scan
CTCSS decode scan
Full VFO skip scan
Program skip scan
Band skip scan
Full memory skip scan
Memory bank skip scan
TV channel search
DTCS decode scan

I was checking the tech. spec. of HTX-420, and found the output power is not 5 watt but 3 watt with 7.2v and 4 watt with 13.8v. This unit suppose to be around US $150. I am sure its going to to get hard time to compete in the market with this high price of US $270.

Sohail Anjum.
VE3ITU.

ICOM T90A COMMENTS BY W7RJR

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