[ICOM] Installing a FL52A

Wed Sep 14 07:37:27 EDT 2005

Hi Gary,

I used to just call them "sockets" but since we
started to use them in a manufacturing job here at
work, and our supplier calls them "pin receptacles" I
have gotten acclimated to the new term, hi.

I am pretty sure most of the major houses such as
Newark, Digikey, etc. carry them if anyone needs to
buy them. Probably would be cheaper, though, to get
them from ICOM (even at a higher piece price) due to
minimum order requirements at most suppliers. The
price per piece would be higher, but you could buy
smaller quantities from ICOM.

In case anyone is interested, the older (and taller)
FL-52 (500 Hz BW) and FL-53 (250 Hz) 455 KHz option CW
filters can be used in the 756 too, but the
installation is a bit different. The spring clip for
the filter body must be removed from the PCB, as it is
designed for a lower height filter can, and it also
adds a bit of extra height which won't allow
installation of the older, taller versions of the
option 455 KHz filters. The pin receptacles must also
be removed from the PCB and the filter then can be
installed in the "normal" way via soldering the pins
to the PCB and using the supplied nuts to secure the
filter to the PCB. Of course, the PCB must be removed
to accomplish this. After installation, the top of the
filter is exactly the same height as the top of the
surrounding chassis well it sits in. The upper case of
the radio rests on the top of the chassis when
installed, and this is the limiting factor for filter
height in the 756.

There are some pix of a 756 I did in this manner,
using an FL-53, on Adam Farson's ICOM site.

73 Frank W3UHF

--- Gary Fiber <gfiber at comcast.net> wrote:

> Thanks Frank,
> 
> I could not remember the name "pin receptacles".
> I had asked Dan if they had any in parts while at
> Dayton, I remember 
> seeing some there a few years ago but the techs
> almost never replaced any.
> I will have to open the 718 and have a look at the
> circuit board 
> before I modify it. I was just wanting the easy
> change out of a 
> filter should I desire to do that.
> I have a narrow SSB filter to go into ti now.
> 
> 73
> 
> Gary K8IZ
> 
> At 05:45 PM 9/13/2005, you wrote:
> >Gary,
> >
> >Those things are called "pin receptacles". The 756
> has
> >pin receptacles on the PCB in the option 455 Khz
> >filter slot, as well as a snap clip to secure the
> body
> >of the filter. There are clearance holes drilled
> thru
> >the PCB so that the studs on the filter case will
> pass
> >thru the PCB.
> >
> >If you remove the nuts and washers from the FL-52A,
> it
> >will snap into the filter clip and will be secured
> >nicely via the snap clip, without having to employ
> the
> >nuts and washers, as with the older rigs.
> >
> >Keep in mind that the board is designed for
> snapping
> >in the option filter without removing the board,
> >although using only gentle pressure while
> installing
> >the filter is recommended.
> >
> >73 Frank W3UHF
> >
> >
> >
> >
> >
> >
> >--- Gary Fiber <gfiber at comcast.net> wrote:
> >
> > > John,
> > >
> > > The reason why in the IC-718 is you have to
> solder
> > > the filter in
> > > place. There are no eyelets to install the pins
> > > into. I have a filter
> > > for mine I bought at Dayton this year. I intend
> to
> > > stop by icom and
> > > pick up some eyelets, drill out the board and
> solder
> > > the eyelets in
> > > place then the filter should work like the rest
> just
> > > push in place.
> > > If it does not stay in place then I'll get a
> piece
> > > of closed cell
> > > foam, glue it to the radio case to hold the
> filter
> > > in place when installed.
> > >
> > > I am sure eyelets is not the proper term buts
> its
> > > all I can think of
> > > this evening.
> > >
> > > Gary K8IZ
> > >
> > >
> > > Gary Fiber K8IZ
> > > GROL PG-19-6691
> > > Washington State Resident
> > >
> > >
> > > ----
> > > Your Moderator: Dick Flanagan K7VC,
> > > icom-owner at mailman.qth.net
> > > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > > Icom FAQ: http://www.qsl.net/icom/
> > >
> >
> >
> >
> >
> >__________________________________
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> >----
> >Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net
> >Icom Users Net: Sundays, 1700Z, 14.316 MHz
> >Icom FAQ: http://www.qsl.net/icom/
> 
> Gary Fiber K8IZ
> GROL PG-19-6691
> Washington State Resident
> 
> 
> ----
> Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> 

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