Wednesday, January 13, 2021

Scanner comparison MVT7100 , XLT80, R10

 


Comparison MVT7100 , XLT80, R10

Aural  and visual inspection

 

 

 

MVT7100

XLT80

ICR 10

External appearance

Appearance

Black color

Black color

As cellular phone

Dimensions

 

Is litle bigger than MVT7100

As cellular phone

Squelch

Not correct. There is a gap between squelching from noise and squelching to noise ( abt 20 degrees)

Correct

Corect (??)

Function knob

Yes û ( change of mems , etc)

No

Yes ( change of mems etc)

Back Light

By switch temporary

With button

Button

Lock keybopard

Yes ûswitch

Yes û button

Yes - button

Screen

LCD

LCd

LCD dot matrix

Monitor

Button

NO

Button on keypad

At start up

Shows last used operation

Scans memories

Shows a message ôprovided by ICOMö (programmable on off ) Shows last used operation and also scans across band ( power on resume)

Electrical data û bands /sens etc

Bands

Full band to 1.6 GHz

66-86
137-140-160-174
406-420-450-470-512
806-966
memorizes last band scanned

Full band to 1.3 GHz

Sensitivity

MW: low
SW: fair
V-U: good

Poor to fair

MW: low
SW: low
VU: good to very good

Images

+365 MHz

+21.7 MHz

Yes û some signals above 1 Ghz

Overloading

Comes from the SW band û 25 MHz I think ( band to occur : 165-180) û mostly in normal mode û used with ext antenna- wires above 4 m

??

With wires above 5 m :
1. on SW over load on same band from sinals >9+20 db
2. Noises on VHF

Modes

All mode ( AM NBFM FM SSB)

FM on V-UHF

AM on 800+ band

All mode ( AM FM SSB CW)

Attenuator

Yes

No

Yes

Passband

Abt 15 kHz on AM/NBFM
Less than 100Khz on WFM

Less ?

Abt 15 kHz
More than 150 kHz on WFM

VFO /temp memory

Yes ûone

No

Yes

HF SSB operation

ECSS

Not 100% corect ( fair )

-

Fair to good

ECSS error

+1.3/-0.25 kHz (L/U SB )

-

0/-0.15 (L/USB)

ECSS decode

LSB also listens to USB and vice versa

-

 

SSB bandwidth

4 kHz

-

>4kHz

NB û ANL

-

-

Included û switchable

VHF-UHF operation

AFC

No

No

Yes ( shows tuning )

Scanning facilities

Steps

0.05, 0.1, (only SSB)

1,5,6.25,10,12.5,20,25,50,100 khz separate step per mode

5 kHz on VHF 12.5 kHz on UHF

0.1, 1,5,6.25,8,9,10,12.5,15,20,25,30,50,100 and usr prog (all modes) same step for all modes

Scan programs

10

-

20

Prg scanning

Per mem bank

   

Mode scanning

Per mem bank

   

Priority CH

One only

One per bank

 

Bypass freqs

500

 

Stored on R bank

Auto scan facility

NO

No

On Q bank ( 100 mems)

Audio detect scan stop

NO

NO

Yes

Step speed at given time (scan)

3.2 MHz ( ref 148-150 Mhz scanning on XLT)

2.03mHz

1.68 mHz

Delay

4 sec

   

Skips

1 sec

-

5, 10 secs .resume

Dial selct freq

Ye

 

Yes

SIGNAVI

-

-

Yes ( 5 steps x BW)

Voice scan control

-

-

Yes

Memories

Memories

1001- 10 banks of 100

50 û 5 banks of 10

1000 mems ( 50 x 20 )

Mode scan

Yes

No

Yes

Bank scan

Yes

No

Yes

Prog scan

Yes

NO

 

Bank priority

No

Yes ( 5)the X1 chs

Yes the X1 chs

Mem write

Manual on next memory after searching

Direct memory ( providing you set it first)

Totally manual (determine mem , mem write )

Mem auto write

No

No

During porg scans

Memory data

Freq, mode, step, att ,skip, prg

Freq

Name Freq mode att skip step

Memory copy

Via the VFO

NO û verification first

Yes

Mem lock

Yes ( pass mode )

Yes (L/O)

Yes ( progr per mem )

Bypass mems

Yes

-

Yes û100

Mem edit

Yes ( reprogrammig)

-

Yes

Mem name scan

-

-

Yes

Connectivity

Batteries

Batteries

4 x NiCad ( included)

4 (not included)

4 Nicad

Save mode

Yes û 3 steps

No

Yes (1:4 /1:16 )

Battery low indicator

Yes ûtwo types

Yes

Yes û

Battery type switch

NO

Yes

Yes

Battery charger û internal

Yes

Yes

Yes

Power on after save mode

<1 sec

-

>3 SEC

Audio

Audio

Good ( trebled)

Fair (not high trebles)

Very good

Audio via heads

Good

Fair

Very good

Heads socket

Mono plug

Stereo plug

Mono plug

Audio hiss

Yes

Yes

Muted

Heads included

Yes

Yes

NO

OTHER

     

Set mode

No

NO

Yes ( opening msg, beep, LCDcontrast ,backlight ,mem skip , prg skip, swe, scan delay , interface comms)

Computer Interface

No

No

Yes CIV mode

Beep sound

Yes (prg)

No

Yes (prg)

Reset mems

Yes

?

Partial û full

S meter

Yes û 10 bars

No

Yes û7 bars

Mains adaptor

Yes 12V

Yes 12V

Yes 12 V

Car adaptor

Yes 12V

NO

No

Belt clamp

Yes

Yes

Yes

Support

     

Band scope

No

No

Yes û 10 bars

Interface û prg

No

No

Yes

Learning curve

Relatively easy though little complicated ( comparing to XLT)

Bit difficult at start

Difficult and complicated necessary to use the guide

 

Opinions:

Yupiteru MVT 7100

MVT was my first radio of this type taken one and half years ago

MVT seems to be a good scanner that is a radio wise system ( ie you start the radio and it shows your last choice) easy to learn easy to use and very nice to operate . Good also to use it as a SW radio with good sensitivity and numerous memories but on MW and LW it requires external antenna, otherwise it can only listen to local (powerhouse) signals .Also good audio in both cases ( headphones and internal speaker ) with abt 8 hours of continuous operation when used as radio in low to normal volumes .

Its battery save mode has 3 positions with a scan point every 1, 2 and 3 secs. Every memory except the freq , mode, and attenuation still contains the step mode (??) used when it as programmed.

Scan programs are immediately modified once step is changed

The receiver is easily overloaded once you use external wire antenna as I , with overloads occur on he 165 û180 mHz part from some very strong SW stations. Also during the nights with power house signals on the SW bands and with its telescoping antenna in full size some signals still can pass this bands . From birdies size , it has numerous across all bands . Some of them are near to S9+40 even on att mode ( eg 269.7MHZ )

Its pass freqs do not occupy the memories . Only one priority channel only.

During save mode the scanner picks up a signal trace tone with a rate of 1 2 3 secs

I prefer it from XLT in general

It is the winner in scanning speed

Update : MVT has three mysterious drawbacks: 

-Often the radio can stuck in a frequency so that it cant change memories , obeyt to button orders etc .I can still happen if adio is iwitched off and on again .The thing is solved easily after you press C/AC for several seconds!
-During battery change and immediate switch on (?) , RESET can be made by itself Thisis a toital damage as everything can be lost: memories ,scan ranges , deleted freqs etc. This is the most danfgeous sistuiation  and you need to reprogram it . UNfortuately this radio is has not PC interface  for fastter reporgrammiing. Although it is  qite easy to redo the work the stiff butons mke the job harder...
-For unknwon reason it happened once to not only remove everything but also block itself sevral bands. Bands were on 260-3xx (unmeasured) 830-860 914-959MHZ - two and otehr smaller . Forunately a simple RESET corected that. 


Uniden Bearcat XLT 80

I bought this scanner from the local market for a friend , as a gift. I kept it in order to preprogram it and give to him later. The seller told me that this is the latest model Uniden made

Very simple scanner too costly regarding to MVT in specs and operation. I waited something more from it namely at last two scanning steps ( say 5 and 10 kHz for VHF , 12.5 and 25 kHz for UHF)other wise it is very annoying to wait scanning esp in the 800 + band . It is good for persons not requiring anything but listening to pre-determined stations

Mysteriously in contrast to what is stated in the specs the 800 + band with FM mode seems to use a AM type mode û capable also to listen to FM TV subcarriers found on the lower end of this band , and some NBFM signals sich as from remote telephones were not listen-able but only as æemptyÆ carries ( better discriminator than from others)

Very few birds have been found

As less sensitive than other models it is not efected with overloads when used it with external wire antennas.

What I liked much in it is the usage of a STEREO heads socket not used in other models.

 

ICOM R 10

This is the æradioö for e friend of me after he has seem mine. IN general this is s very complex having the philosophy and the design of a cellular phone and required a big learning curve in order to use it and program it as I wlways must to consult the op guide.

Full menu driven , with the philosophy of the latest models of ICOM (als for the R 75 SW receiver ).

From performance it exceeded the audio of MVT ( so : higher bandpass on SW bands and better audio amplifier ) and the sensitivity of MVT esp on the VHF /UHF bands when both radios used in parallel . I did not like however the way of memory programing and band change as it required to use the FUNC button at the left side of the speaker

Some of the nicest features were the total mute when there was no signal as well as the auto memory write search

It s attack time while in save mode was abt 3 secs

IN general : R10 is the winner in features and functionality

What I did not like: Its headphone socket was too bad that very easily the head pug is pulled out à..

 

 

Comparison between receivers:

I m sorry but parallel tesing between R10 and MVT was nearly imposible as after the T splitter the wires used behaved as antennas that effected reception too much giving more than 3 æbarsÆ of signal in certain cases and in some QSOs different users produced different signals in each model ( say : user 1 gave higher for MVT user 2 gave lower for MVT)

As in general :

SW : MVT gains in reception diring the most bands. Its S meter is more sensitive than R10

2 m : R 10 gains better

400 mHz : again R10 better

UHF / TV : MVT was little better

 

 

 

 

Comparison between antennas

 

 

Freq MHz

Whip XLT

Whip R10

Telescopic shortened

Telescopic

Full

67

<5

4+

4

9

215

2

6

4

9

411

4

6

6

6

484

5

3

4+

-

644

   

1

3

653

<1

2

2+

7

668

6

6

6

9

780

3

6

2

5

796

7

 

5

9

970

5

5

4

7

 

 


No comments:

Post a Comment

Top posts