[ICOM] 500 kHz transceiver?

[Hans Remeeus]

Hello Adam,

Yes, I have lost my naughty hairs ;-)

The Siemens E311 was an excellent and very quiet receiver. We used him 
on almost all positions, except 500 and 461 kHz.

The combination IC-7700 and 500 kHz transmitter should be an excellent 
one! I like those Finish projects very much. Very nice design.

First we need the allowance to transmit on 500 kHz... Not unimportant ;-)


73,
Hans Remeeus (PA1HR)
http://www.remeeus.eu
Communication is about people, the rest is technology.


Adam Farson schreef:
> Hi Hans,
> 
> Nice-looking red-haired kid!
> 
> I see that PCH used many Siemens E311 receivers. I used one at the Siemens
> club station in Munich, in 1987. That was one of the nicest tube receivers -
> synthesised, with 100 kHz and (optionally) 1 kHz loops.
> 
> Back on topic: You could use your IC-7700 as a receiver on 500 kHz, in
> conjunction with a separate homebrew or surplus transmitter. I also had a
> look at the IC-7600 block diagram; the 1.6 MHz LPF in the shared BPF group
> could theoretically be switched into the transmit signal path by modifying
> the switching-diode control logic. This would deliver useful exciter output
> on 500 kHz, but I am not sure how well the driver and PA would handle it.
> 
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>