[Graphic] Robinson RP2100 use some experience


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Robinson PR2100 has been listed for a long time, reported performance has been thinking about getting a good play. Finally determined in a set of Taobao, even without a refund of the goods! There has been a transfer of the privilege of speaking friends, after a period of familiarity and use to obtain some of the feelings, put forward for your reference.
As for the sensitivity of modern radio is not a problem, so mainly to see the selective use of FET reported PR2100 (should be placed and used in high frequency circuits, the circuit can not be determined because they can not get), secondary and high frequency an intermediate frequency (55.845MHz) so anti-image interference and adjacent channel overload and clutter, the aircraft I saw the radio is still good, it is worth mentioning is that 50 European dedicated shortwave antenna input, if outdoor antenna with coaxial cable connection can greatly improve the receiver sensitivity can reduce the clutter to a minimum. In the same outdoor antenna connected when compared with the DE1103, 1103, when receiving a strong signal apparent overload, and the introduction of more clutter. 2100 close to the professional machines can significantly reduce the interference to improve sensitivity.
As the machine accuracy without using the PLL frequency drift, an optional step compatible with the broadcast channel bandwidth, so whatever the short-wave tuning is very convenient, that meter band shortwave step button with good results.
There are four 2100 power supply: built-in battery two groups, V and can switch at; external AC 220V and DC 9V, greater choice. Need to be reminded that the display light when the aircraft quiescent current of about 100ma, is off about 80ma, the button lights, display lights are about 120ma, the battery power is not small.
2100 audio output for desktop is good enough, BTL amplifier uses five inches double basin speakers, sound quality is a portable machine can not be compared, I have no other similar machine no comparisons. Aircraft in the FM band stereo receiver with Vinal PX-318 headphones listening, height, and tone appropriate to enhance the sound quality is quite good after, transparent and clear treble, bass deep shock, locate a clean background, clear and accurate enough for wide dynamic range. 1103 badly under the same conditions.
Appearance is a matter of opinion do not want to add on that. The following two points are the use of inconvenience or defects:
A total of 50, 10 memory units for each band too few, and has kept Taiwan can only use a button to call out a direction to choose, tune out after the tuning knob and the upper and lower button can not operate, is extremely inconvenient, almost the store radio feature useless.
Second, wide, narrow-band selection function when the narrow-band signal attenuation is too large, sensitivity decreases too much, can not listen to the signal weaker. (I do not know is not unique to this machine?)
Overall pretty good 2100, the higher cost.


Sample/Wholesale
Price
Shipping
Carrier
Buy it Now
pcs sample
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pcs
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