| Home |
| Search |
| Today's Posts |
|
#13
January 9th 07, 09:13 PM
posted to rec.radio.amateur.boatanchors
|
|||
|
|||
What is BEST all-tube, general coverage receiver under $1000?Under $2000?
Don Bowey wrote:
On 1/9/07 10:32 AM, in article l, "Stan Barr" wrote: On Mon, 08 Jan 2007 17:10:25 -0500, Chuck Harris wrote: Scott Dorsey wrote: In article , Any reason why a 1N4007 wouldn't be happy in there? Well, yes. When functioning as a demodulator, the diodes take the Splitting hairs, if the diodes were in a ckt such as a "ring modulator" where they functioned as a product detector, then they *were* a demodulator, but most diode detectors were just envelope detectors. How so? The diodes in a KWM2/2A are used as a ring modulator, and work just as I described below. A 1N4007 would not be capable of working that way at 455KHz. IF frequency (455KHz), and the BFO frequency (453.65/456.35KHz), and make audio. When functioning as a modulator, the diodes take the audio, and the BFO frequency, and make modulated IF. A 1N4007 cannot switch at even audio rates, let alone at 455KHz. You could always try a "vaccuum state" diode such as a 6AL5... |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| FA: Yaesu FRG-7700 General Coverage HF Receiver | Equipment | |||
| FA: Racal RA6790 General Coverage HF Receiver - Simply the BEST! | Swap | |||
| FA: beautiful Icom IC-R71A general coverage receiver | Swap | |||
| FS: Heathkit SW-717 General Coverage Receiver | Boatanchors | |||
| FS: Heathkit SW-717 General Coverage Receiver | Boatanchors | |||
Threaded Mode
