|
Roger
A T- 200 is ideal but maybe too large for u. Except
you have a large antenna 20w is not enough on 137 for any serious
impact.
The aim on this band is for at least 1W
erp
de mal/g3kev
----- Original Message -----
Sent: Sunday, July 25, 2010 6:58 PM
Subject: LF: 136kHz LPF toroids?
Some advice please....
- I'm about to construct a 136kHz transverter with an output power up to
20W. What's the best choice of toroid for the TX output low pass
filter inductors for this sort of power level? Around 54uH is required
and this is rather too much for a T50 (red) toroid that I used on 500kHz. I
don't want anything too physically large if I can avoid it.
- Also, are there any readily available canned inductors (or toroids)
suitable for use as the input tuned circuit on RX? Something like the
KANK3333 inductors from Toko? Again, nothing too big unless this is a
necessity for large signal handling.
Thanks in advance for
inputs.
73s
Roger G3XBM
--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
G3XBM
GQRP 1678 ISWL G11088
| 