Sorry again for all friends here , i have to put several reviews from grocities before Yahoo deleted them all!!

Aug 31, '09 10:00 PM

for everyone

http://zlgr.multiply.com/reviews/item/93

COMPARATIVE TEST 1102 and 1103

1103 on the top middle

The 1103 has been bought on end of 2004 together with ordering a second 1102 for a beloved person. Because the delivery to the beloved person was urgent I first compared the 1102 with my older ordred model , and more recently tested the 1103.

The 1103 in general was little more bigger than1102 with a totally different approach in tuning, volume etc working with menu like indications

The 1103 uses the menu approach to do all its operations .It combines the operation of the wheel ( normally for tuning) with other buttons to do :

1. Programmable stop time ., default off ,by using power and tuning wheel Maximum time: 99 mins

2. Volume level by using battery /volume knob and tuning wheel Preset volume is 40 , maximum .MY Optimum volume levels are 8-12 max , with 8 in a quiet environment when using headphones

3. Frequency tune

4. Memories , recall and preset : . There are 268 memories shown in the display with their hexadecimal number

Though much has been typed on both models I will just refer to some important differences in operation

Side by side FM test

Steps

1103 has steps of 25 kHz while 1102 steps of 10 kHz ( in the special bank)

Images

1102 as in my older posting shows images on the lower FM band by 21.4 (2x10.7) MHz at a slightly lower level . IN contrast to it 1103 even connecting a 16m antenna did not shown any images but just a little noise overload on the lower FM band . See below for more

Sensitivity – selectivity

Sensitivity was difficult to measure as both radios were quite sensitive in FM

1103 was more selective in several difficult to tune stations on 1102. A station on of 106.8 MHz accurately tuned on 106.825 was free from QRM

High self-noise

1103 found having noise across all Fm band . Due to high levels of signals ( and more than 60 stations) in Thessaloniki , this has been proven in a place near the greek , Albanian and FYROM borders. It is a relatively low level noise that also produces stereo QRN

Audio& bandwidth :

Nice audio in both , however little more bassy on 1103 . Seems having relatively narrow bandwidth as highly modulated stations seems relatively distorted , something that does not happen with 1102. This comes from the relatively narrow bandwidth thati can presume is 180 kHz

MW- SW

Side by side sensitivity test:

This is a test to listen marginal signals outdoors by using diversity stereo reception as follows:

• 1102 used with fully deployed antenna, 1103 deployed to same length and using the earphones of the two DE1102 ( model DE919) .

• Volume level set on a strong signal (1044 MW) so that both earphones have the same audio level.

• Thus audio is heard at the middle of the two ears (what I mean here as audio-point) . .

• If a signal is heard better in one radio, ‘audio point’ goes to the more sensitive radio.

• If my theory is wrong please let me know

Frequencies tested and results:

Notice: 1102’s SW amplifier shows ower gains on the 10-11 MHz bands . And has been tested in all 3 models ordered , and compared qith PL200 and 1103

As in result 1103 wins over 1102 in tems of sensitivity or lower circuit noise.

More results: 1103 ATT switch offers high levels of attenuation. That does not happen on 1102 !

1103’s internal MW amplifier produces higher gain levels towards higher frequencies

Images :

Overloads

1102 has images near 5500 and 8000 MHz

1103 found images near to 6300 , 14800 , 17900 Mhz

Also on 455 the freq is dominated by strong signal due toIF

Earphones DE929

The earphones of the 1103 found to be the best ones I have used , producing ‘extended’ audio frequencies similar to Koss UR 23 headphones , ie at least 15 kHz is my ears, with a little different audio equalization . It seems with little higher middles and little higher trebles above the 8 kHz

Comparing to other earphones I use , it produces the clearest and most linear audio . I have used more than 6 other earphones so far , from Aiwa’s . Sony etc

Following this , I ordered from the company a further 5 pieces for using them on all my other audio sets ( radios , walkmans etc) at a factory’s price is $5 each

Connections :

Antenna : the antenna connection in my (early) model sown some great attenuation comparing to the line in level of the 1102 . Here the big difference is that 1102’s antenna is abt 5 m in contrast to the 10 m of the 1103’s . However I preferred to use the reel antenna of Tecsun PL200 with antenna clip on when I was in very clear environment ( I radio terms) on the Greek Albanian borders or even when I am in trips and beaches.

Headphones out : I always use the radio with earphones and more recently using its De929 ones . Audio in generally is good but quite trebly.

gr