
( Brand: Grebe ), ( Manufacturer Part Number: CR-18 ), ( Band: Am ), ( Type: Base Station )
When looking at the CR-18, it only uses two standard 201 tubes which could be replaced, if necessary.
You can view the last picture to see what coils are included and unit does not have a complete set of so buyer will need obtain them elsewhere or arrange for proper be manufactured. Also included in this sale are an original user manual, brochure, and advertisement from the 1926 popular science magazine. Plug in coils enable rapid change to be made from one frequency band another and are so designed that maximum signal strength is obtained.
Cosmetically, the CR-18 is fully intact except for compliment of coils and case internals show no cracks, damage, or issues that would make this radio less desirable. Inductance coils are mounted on supports, far removed from the operators body and metal objects, thus eliminating capacity effects attendant losses.
The owner will need to obtain a device power dc radio with customary 1920s voltage s if it is desired operate. In looking at the coil guide, range is from 1380 khz - 35 MHz Grebe manufactured a variety of am radio receivers 1920s for broadcast band, but very few their CR-18 designed hf bands shortwave have survived into present time.
This sale is for a rare Grebe CR-18 shortwave receiver meters covering from 1500 khz to 30 MHz.
An isolated grid terminal lowers the minimum capacity and insures correct connection of coil. Thus, this 1926 radio was sold primarily for amateurs to listen distant cw signals or experimentation.
Oscillating point practically constant over the entire tuning range. We acquired this radio a few years ago, but have never connected the unit to dc power or antenna as for us it was historical display item only.
The radio comes with coils that fit unit and some do not it properly perhaps can be used to make other. Grebe s-l-f straight-line-frequency condensers with small minimum capacity insure ease of tuning and maximum signal strength.