[net.ham-radio] rcvr comments

rjr@mgweed.UUCP (Bob Roehrig) (06/06/84)

Since others are posting their opinions on receivers here, I'll throw in
my vote.

I had a chance to try out a ICR70 a few weeks ago for about an hour
and it is truely a fine rcvr. If bucks were no problem I would go
for one without doubt.

My main "auxilliary" receiver is a Kenwood R-1000. For the money it
also is a fine rcvr. In this area there are more hams with that rcvr
than any other. All I have encountered have excellent stability and
minimum drift (about the same as my 820S transceiver).

When using a random wire for an antenna, it is a good idea to use a
small antenna tuner for best results, as one really should with any
rcvr.

A tuner is a must when using it below the broadcast band to prevent
bdcst stations from creeping in. I am about 20 miles from several
50kw stations.

As I pointed out in my article in "73" magazine a year or so ago,
The AGC time constant is reversed from what it should be (unless
Kenwood has corrected it by now). On SSB/CW it has the fast AGC
and on AM it has slow release AGC, which is backwards.

My R-1000 is used mainly for rtty work and is quite adequate for this.
Rtty probably requires a more stable rcvr than any other mode.

I have transmitted on nearby frequencies (working splits on the same band)
with a separate antenna on the R-1000 and have not blown the front end
out as has happened to other rcvrs and transceivers.
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I would stay away from the R-600 and the R-2000.....


The only R-600 I have had access to had a mechanical problem
in the VFO dial mechanism -- backlash!

The R-2000 steps in 50 Hz jumps when tuning. This is especially
bad for RTTY use. Beyond that, I can't comment as I have not
actually used one.

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Another fairly decent rcvr is the Yeasu FRG-7. This is an
older rcvr of theirs but is synthesized and very stable.
They can be had for less than $200 used. I use one for a
backup rcvr and for semi-continuous monitoring of a particular
frequency, while tuning around with the other rcvr.

The FRG-7 does not have digital readout, although there are some
available as add-ons. The Analog dial can be read out to within
a couple of kHz with care.

The IF filter is a little wide but can be replaced. The product
detector is quite good. This rcvr is more forgiving on what you
use for an antenna since it has a tunable preselector.
It also can be powered from internal D cells or external 12 volts,
making it ideal to haul around on vacation.

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Stay away from the Radio Shack jobs. Bad dial mechanisms and
lotsa drift are their main problems.....


Bob K9EUI