RCA RP7887 Super Radio 3
by RCA
List Price:
Our Price: $41.88
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Availability: Usually ships in 1-2 business days
Category: CE
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Digital Photo Product Details
Manufacturer: RCAAudio: English (Original Language)
Model: RP7887
Color: One Color
Product features:
- A high performance SUPER RADIO III AM/FM radio is still our best long-range performance and selectivity radio 2-Way Speaker System
- The built-in 2-Way speaker system is driven by a 6.5" high sensitivity woofer and 2" cone tweeters 2-Way Power with Automatic (AC/DC) Switching
- Automatically switches from DC to AC when the unit is plugged in to avoid using battery power
- Separate Bass and Treble Controls Leaves the control to you by providing separate bass and treble controls
- High performance Super Radio III - still the best in terms of long-range performance and sensitivity
- 2-way speaker system - the built-in 2-Way speaker system is driven by a 6.5" high sensitivity woofer and 2" cone tweeters
- External AM/FM antenna terminals - easily connect your own antenna
- Separate bass and treble controls - leaves the control to you by providing separate bass and treble controls
- Thumbwheel tuning controls - provides convenient and accurate tuning control
Digital Cameras Photo Reviews of RCA RP7887 Super Radio 3
Customer Review: Poor factory AM calibration, wrong component values used?
Summary: 1 Stars
Took a while to ship, well packed, but product is a low-performance radio by my estimate because the factory adjustment is poor and the tuning pot doesn't allow for an easy recalibration of the tuning VCO, I think RCA received a bad schematic, this radio needs a different tuning pot.
I have a GE version of this radio and it required no further calibration and is the only radio I have that could pick up KGO 810AM during the day
from 400 miles south of the transmitter.
There is a low VCO tuning adjustment pot that I had to adjust to get a station at 540 Khz, but then, a 570, 600, 620, 640 and KNBR @ 680 were not
in the proper dial location, they were off by 40-100 Khz on the dial and all the upper freqs at the top of the dial were missing or out of range of the VCO adjustment, so I adjusted the upper VCO pot and I can get a station at 1700 Khz but all the freqs below it are either not present or 50-150 Khz out of dial location.
Normally when you adjust a new radio, you only need to adjust it at 600, 800 and 1400 Khz to get the heterodyne calibrated, otherwise you get the problems I have with this RCA version of a super-radio, VCO EMI that prevents some stations from coming in or the VCO emi is so strong that even a strong signal like a 50Kw KNX 1070 comes in so weak because it's not in sync with the heterodyne freq, this also affects the ability to use the wide/narrow band-width switch, at lower freqs before my necessary
re-calibration, the wide width made the center of a 1 kHz center freq about
40-60 kHz wide and at upper freqs, it made even a strong signal hard to center because the heterodyne was so out-of-sync that a lot of stations were eaten up by emi noise.
Currently this radio is a headache, once I adjust the upper freq VCO adj pot, I have to readjust the lower VCO adjust pot as calibrating for the 1400 KHz signal throws all the lower freqs out of position, then I have to re-adjust to re-acquire the 540 KHz signal, then the mid freqs are out of sync, so I adjust the upper VCO adjust pot, now both the upper and lower freqs are out of sync again.
With an analog variable tuning capacitor, once you adjust the tuning caps on the top, 2 for AM, 2 for FM for the 600,800 and 1400 KHz freqs, you are set for the whole dial, hardly ever does it require more than 2 or 3 tweaks to get everything on the AM dial set up properly, from my experience, I think the main tuning pot, (variable resistor) may have used the wrong type audio taper vs. a linear taper or a combination of either with the wrong value, (using a 50K vs. a 100K ohm non-linear tapered variable resistor) that alone would explain the problems I'm having getting the entire dial calibrated.
Other buyers are having good results?
Maybe I got a Friday poor Q.C. serial Number, I don't know, but one thing is for sure, I did not get the same quality of radio that I got 4 years ago when GE was still labeling these radios with their own name, not RCA.
Description of RCA RP7887 Super Radio 3
The RCA RP7887 Super Radio III is still the best in long-range performance and sensitivity. This high performance radio can pick up frequencies from a distances that other radios can't match. It also provides crisp and clear audio. It has a 2-way speaker system that's driven by a 6.5" high sensitivity woofer and 2" cone tweeters. The separate bass and treble controls leaves the control of your audio. It also features 2-Way Power with Automatic (AC/DC) Switching. The RP7887 automatically switches from DC to AC when the unit is plugged in to avoid using battery power. Receive AM/FM frequencies with ease, or easily connect your own antenna to the external antenna terminals.Digital Cameras & Photo Categories
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