[Icom] Re: Low pass filter

[icom@mailman.qth.net]

Hello Sasi,

I use:

E.F. Johnson Company
Drake TV-3300-LP
Bencher YA-1
Unadilla/Reyco WA2QKU/WA2ZOT (for the "HAM who gives a DAM!")

The only one to open is the E.F. Johnson and this filter really looks
excellent inside; old fashion high quality!

We did some measurements and the Unadilla/Reyco was the best, however there
were no very big differences.

In QST of some months ago there was an interesting test of low-pass filters.

Don't forget to install the low-pass filter AFTER the external
SWR/power-meter (if in use). These meters can generate some harmonics,
because they use diodes.

For 50 MHz I use a Comet bandpass filter. Don't look inside! Brrrrr.....
Very cheap components!

For 144 MHz and 430 MHz I use Procom bandpass filters. They work fine too.

73!
Hans Remeeus.

Ham Radio:
PA1HR

Sites:
www.remeeus.nl
www.qsl.net/pa1hr

e-mail:
hans@remeeus.nl


----- Original Message -----
From: "sasi nayar" <vu3snm@yahoo.com>
To: <icom@mailman.qth.net>
Sent: Friday, October 25, 2002 12:42 PM
Subject: [Icom] Re: Low pass filter


> Hello folks
> I have a 706 MKII. Had a station inspection recently
> and the inspector asked me to install a low pass
> filter. I know that the top end radios like the PRO II
> comes built in with a low pass filter. Does Icom stock
> it as an accessory. Didnt find it on their website and
> hence the question. Has anyone tried using any other
> brands of low pass filters with their radios?
>
> Would appreciate your inputs
> 73
> Sasi
> 9V1SM
>
>
> =====
> Amateur Radio For Global Peace and Fraternity
> ----------------------------------------------
> Sasi Nayar, 9V1SM / VU3SNM,
> Reef Ecology Lab, Department of Biological Sciences
> National University of Singapore,14 Science Drive 4
> Singapore 117 543. Tel : (65) 6778 7112
URL:http://www.dbs.nus.edu.sg/lab/reef/SasiNayar.htm