User Tools

Site Tools


radios:ft-857d

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
Last revisionBoth sides next revision
radios:ft-857d [2023/04/15 17:05] m0lteradios:ft-857d [2023/04/15 17:49] m0lte
Line 1: Line 1:
 ====== Yaesu FT-857D ====== ====== Yaesu FT-857D ======
  
-A 160m to 70cm, all mode, portable, 100W radio without a tuner.+A 160m to 70cm, all mode, portable, 100W radio without a tuner. Great for high-ish power portable paired with a fairly chunky battery, and resonant antennas.
  
-===== Technical fixes =====+===== Technical ===== 
 + 
 +==== RF out ==== 
 + 
 +It is fairly straightforward to add an SDR output to this radio, with an expensive [[https://www.sdr-kits.net/index.php?route=product/product&product_id=162|HupRF Panoramic Adapter Tap (PATV)]] Board or similar, which is just a small buffer amplifier. Using this board you can directly connect something like an SDRplay RSP and watch whole bands at a time, including setting up click-to-tune etc. 
 + 
 +==== Filter failure ====
  
 The FT-857D has an issue where ceramic filters go bad and the receiver fills with crashes, even with no antenna connected. Apparently this is due to a design error. If yours hasn't failed yet, prevention is possible, see {{ :radios:ft857-897_cf1005-fix.pdf |}}. Apart from the symptom, a Yaesu technician reports that if your filters have a "dusty" or "hazy" appearance, it is likely they have failed / will fail soon.  The FT-857D has an issue where ceramic filters go bad and the receiver fills with crashes, even with no antenna connected. Apparently this is due to a design error. If yours hasn't failed yet, prevention is possible, see {{ :radios:ft857-897_cf1005-fix.pdf |}}. Apart from the symptom, a Yaesu technician reports that if your filters have a "dusty" or "hazy" appearance, it is likely they have failed / will fail soon. 
Line 30: Line 36:
 Replaces LTM455GW, CFWM455G, ALFYM455G\\   Replaces LTM455GW, CFWM455G, ALFYM455G\\  
 9kHz 6dB bandwidth, commonly used for FM(N)   9kHz 6dB bandwidth, commonly used for FM(N)  
 +
 +For me, CFWM 455E is CF2, LTM 455GW is CF3, and LTM 455HW is CF5.
radios/ft-857d.txt · Last modified: 2023/04/15 17:49 by m0lte