[R-390] Re: R-390 digest, Vol 1 #335 - 13 msgs
tkinney
[email protected]
Tue, 13 Aug 2002 10:20:44 -0400
Just listed on ham swap site, 2-R390a's, one 54 Motorola, one 62 Amelco, =
2- CV-591 SSB adapters, audio amp all mounted in 6'rack $1000.00 =
[email protected] or 775-575-4753 W7RES Photo posted on Ham site
Tom Kinney
ke9ue
----- Original Message -----=20
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, August 10, 2002 3:48 PM
Subject: R-390 digest, Vol 1 #335 - 13 msgs
> Send R-390 mailing list submissions to
> [email protected]
>=20
> To subscribe or unsubscribe via the World Wide Web, visit
> http://mailman.qth.net/mailman/listinfo/r-390
> or, via email, send a message with subject or body 'help' to
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>=20
> You can reach the person managing the list at
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>=20
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of R-390 digest..."
>=20
>=20
> Today's Topics:
>=20
> 1. Re: VIRUS !?!? (JAMES T BRANNIGAN)
> 2. Solid State R-390, Why Not? (Tom M.)
> 3. Re: Solid State R-390, Why Not? ([email protected])
> 4. RE: Solid State R-390, Why Not? (Michael P. Olbrisch)
> 5. Reasons NOT to Solid State a 390 (James Miller)
> 6. RE: Reasons NOT to Solid State a 390 (Michael P. Olbrisch)
> 7. Re: Reasons NOT to Solid State a 390 (JAMES T BRANNIGAN)
> 8. Re: Reasons NOT to Solid State a 390 (blw)
> 9. Re: Reasons NOT to Solid State a 390 (JAMES T BRANNIGAN)
> 10. Re: R-390 restoration (Bryan Stephens)
> 11. RE: Solid State R-390, Why Not? (AI2Q Alex)
> 12. RE: VIRUS !?!? (Bob Tetrault)
> 13. R-390 and Jagrolets ([email protected])
>=20
> --__--__--
>=20
> Message: 1
> Date: Sat, 10 Aug 2002 08:07:58 -0400
> From: JAMES T BRANNIGAN <[email protected]>
> Subject: Re: [R-390] VIRUS !?!?
> To: Bob Tetrault <[email protected]>, [email protected]
>=20
>=20
>=20
> > Funny, but my Wintel 98 Outlook box behind a cable modem behind a =
DHCP/NAT
> > router has never, and I mean NEVER, had a virus. No AV whatsoever.
> >
> > Now I really should pull on the rubber suit and duck while crossing =
the
> info
> > superhighway!
> >
> > Whistling in the dark in Bridgetown, OR
>=20
> Well, you don't think you have a virus, but without AV you will never =
know.
> Just because the computer is still working doesn't mean it is clean. =
You
> could be harboring one of the little suckers that collects e-mail =
addresses
> and remails these gems.
> Anyone without CURRENT AV, exposes themselves to a potential killer =
(been
> there cleaned it up) and exposes everyone they are in contact with to =
a
> potential problem. The DHCP in the router does nothing to prevent =
this.
>=20
> Jim
>=20
>=20
> --__--__--
>=20
> Message: 2
> Date: Sat, 10 Aug 2002 05:26:59 -0700 (PDT)
> From: "Tom M." <[email protected]>
> To: blw <[email protected]>, [email protected]
> Subject: [R-390] Solid State R-390, Why Not?
>=20
> Gentlemen?
>=20
> Why not solid state a R-390A?
>=20
> If it was very rare I'd say no. But as plentiful as they are, why not =
advance
> the range of the 390A hobby?
>=20
> Regarding the grandpa with two Jags, I guess I don't need to go into =
the joke
> as to why Jags are sold in pairs.
>=20
> 73 Tom
>=20
> Favorite bumper sticker: "THE PARTS WHICH ARE FALLING FROM THIS =
MACHINE ARE OF
> THE FINEST BRITISH MANUFACTURE"
>=20
>=20
> --- blw <[email protected]> wrote:
> >=20
> > > Saddest part is that the Jags are a very reliable car if you =
maintain them
> > > properly. Unfortunately too many people want the looks but have =
all they
> > can
> > > do
> > > to change the oil regularly. At least their problems are solved =
now with
> > the
> > > Forduars. Plug-n-play mentality, not unlike ricebox vs. tube rigs.
> > >=20
> > > 73, Todd/'Boomer' KA1KAQ
> >=20
> >=20
> > My grandfather had a couple of new Jags about 10 years ago. I drove =
them
> > both and they were absolutely depressing. One had a lot of interior =
parts
> > falling off and lying on the floor mats. Nice acceleration. I =
couldn't hold
> > either in a straight line no matter how smoothly I drove it. They =
wandered
> > all over the place. I grew up with a Jag that my dad had back around
> > 1957-58. It was beautiful. That is one of the reasons I was so =
depressed
> > with Jags 10 years ago.
> >=20
> >=20
> > Barry
> >=20
> > _______________________________________________
> > R-390 mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/r-390
>=20
>=20
> __________________________________________________
> Do You Yahoo!?
> HotJobs - Search Thousands of New Jobs
> http://www.hotjobs.com
>=20
> --__--__--
>=20
> Message: 3
> From: [email protected]
> Date: Sat, 10 Aug 2002 08:41:02 EDT
> Subject: Re: [R-390] Solid State R-390, Why Not?
> To: [email protected], [email protected],
> [email protected]
>=20
>=20
> In a message dated 8/10/02 7:28:37 AM, [email protected] writes:
>=20
> << Gentlemen?
>=20
> Why not solid state a R-390A?
>=20
> If it was very rare I'd say no. But as plentiful as they are, why not =
advance
> the range of the 390A hobby?
>=20
> Regarding the grandpa with two Jags, I guess I don't need to go into =
the joke
> as to why Jags are sold in pairs.
>=20
> 73 Tom
>=20
> Favorite bumper sticker: "THE PARTS WHICH ARE FALLING FROM THIS =
MACHINE ARE OF
> THE FINEST BRITISH MANUFACTURE"
>=20
> >>
>=20
> Uh ...Oh..British bashing................LUCAS "The Original Prince of =
> Darkness."
>=20
> --__--__--
>=20
> Message: 4
> Reply-To: <[email protected]>
> From: "Michael P. Olbrisch" <[email protected]>
> To: "'Tom M.'" <[email protected]>,
> "'blw'" <[email protected]>, <[email protected]>
> Subject: RE: [R-390] Solid State R-390, Why Not?
> Date: Sat, 10 Aug 2002 12:58:44 -0000
>=20
>=20
>=20
> > -----Original Message-----
> > From: [email protected]=20
> > [mailto:[email protected]]On
> > Behalf Of Tom M.
> > Sent: Saturday, August 10, 2002 12:27 PM
> > To: blw; [email protected]
> > Subject: [R-390] Solid State R-390, Why Not?
> >=20
> >=20
> > Gentlemen?
> >=20
> > Why not solid state a R-390A?
>=20
> Well... I will not try to stop you from doing it. I wouldn't stop you =
> from killing your best dog, or turning a 1965 Mustang Convertible=20
> into a low rider. If you own it, you can do it.
>=20
> But I damn sure wouldn't help you do them either. Other than the
> known rectifier or 3TF7 mods, I doubt you will get much out of this=20
> group.
>=20
> Usually, I would end it with "Good luck, let us know how it turns=20
> out." In this case, I do not want to know, and will set a filter to=20
> dump further "Solid State R-390, Why Not?" messages to the=20
> spam-file.
>=20
> Don't know what you do for a living, but please do not apply for a
> curators position at the Smithsonian.
>=20
> Mike.
>=20
> --__--__--
>=20
> Message: 5
> Date: Sat, 10 Aug 2002 08:36:52 -0400
> From: James Miller <[email protected]>
> Reply-To: [email protected]
> To: R390 LISTINGS <[email protected]>
> Subject: [R-390] Reasons NOT to Solid State a 390
>=20
>=20
> 1- Dynamic range of a tube receiver typically better than solid state. =
> Tubes run at high voltages, solid state devices run at low
> voltages, hence in general tube front ends have much better dynamic
> range. Better strong signal handling capability.
>=20
> 2- Resistence to EMP and Static Discharge. These days, don't laugh, =
it
> could happen. Watch the news. If you survive the burst, you're 390
> will still work. Your $4000 Icom radio probably won't. Also, in
> general a tube rig will be less suscepitle to static discharge. =
During
> Desert Storm, the high tech solid state radios would be damaged by
> static discharge on antennas caused by sand storms. They had to rush =
in
> some KWM-2 tube rigs as backup. So much for solid state.
>=20
> 3- Design incompatibility - The unique capabilities of the 390 depends
> heavily on very high impedance tube circuits. The AGC is an example.=20
> The multiple stages of preselector and mixer tuning were carefully
> designed, mechanically and electrically, for high impedance tube
> circuits. Solid state is typically lower impedance, even FETs. If you
> replace the front ends with solid state, your preselector and mixer
> tuned circuits may not have the same Q and will probably not be as =
sharp
> in bandwidth. Hence, even more susceptibility to out of band strong
> signals and intermod.
>=20
> 4- Noise floor - Assuming you also upgrade the LOs and PTOs to solid
> state PLL circuits, your noise floor will get worse due to phase noise
> from the PLL's.
>=20
> 5- Why bother? If I want a solid state radio, I'll go buy one =
designed
> for solid state devices.
>=20
> Any others?
>=20
> --__--__--
>=20
> Message: 6
> Reply-To: <[email protected]>
> From: "Michael P. Olbrisch" <[email protected]>
> To: <[email protected]>,
> "'R390 LISTINGS'" <[email protected]>
> Subject: RE: [R-390] Reasons NOT to Solid State a 390
> Date: Sat, 10 Aug 2002 13:29:29 -0000
>=20
>=20
>=20
> > -----Original Message-----
> > From: [email protected]=20
> > [mailto:[email protected]]On
> > Behalf Of James Miller
> > Sent: Saturday, August 10, 2002 12:37 PM
> > To: R390 LISTINGS
> > Subject: [R-390] Reasons NOT to Solid State a 390
> >=20
> >=20
> >=20
> > 2- Resistence to EMP and Static Discharge. During Desert=20
> > Storm, the high tech solid state radios would be damaged=20
> > by static discharge on antennas caused by sand storms.=20
>=20
> Yep... I was there. My personal IC-735 took a hit exactly that=20
> way! ICOM rushed me the parts, for free. But I was still non-op
> for several days. I didn't take my R-390A over, but if I had, I
> could have still been OP, running split-RX on it, since the 735
> TX was just fine.
>=20
> Mike.
>=20
> --__--__--
>=20
> Message: 7
> Date: Sat, 10 Aug 2002 09:50:04 -0400
> From: JAMES T BRANNIGAN <[email protected]>
> Subject: Re: [R-390] Reasons NOT to Solid State a 390
> To: [email protected],
> R390 LISTINGS <[email protected]>
>=20
> > 1- Dynamic range of a tube receiver typically better than solid =
state.
> > Tubes run at high voltages, solid state devices run at low
> > voltages, hence in general tube front ends have much better dynamic
> > range. Better strong signal handling capability.
>=20
> At one time that was true, but not in the last 20 years.
>=20
> > 2- Resistence to EMP and Static Discharge. These days, don't laugh, =
it
> > could happen. Watch the news. If you survive the burst, you're 390
> > will still work. Your $4000 Icom radio probably won't.
>=20
> If I survive an airburst, the least of my problems will be the state =
of my
> radio.
>=20
> Also, in general a tube rig will be less suscepitle to static =
discharge.
> During
> > Desert Storm, the high tech solid state radios would be damaged by
> > static discharge on antennas caused by sand storms. They had to =
rush in
> > some KWM-2 tube rigs as backup. So much for solid state.
>=20
> That has less to do with the radios than the Army's penchant for =
fighting
> the last war. I'm surprised the Infantry wasn't issued parkas and =
skis.
>=20
> > 3- Design incompatibility - The unique capabilities of the 390 =
depends
> > heavily on very high impedance tube circuits. The AGC is an =
example.
> > The multiple stages of preselector and mixer tuning were carefully
> > designed, mechanically and electrically, for high impedance tube
> > circuits. Solid state is typically lower impedance, even FETs. If =
you
> > replace the front ends with solid state, your preselector and mixer
> > tuned circuits may not have the same Q and will probably not be as =
sharp
> > in bandwidth. Hence, even more susceptibility to out of band strong
> > signals and intermod.
>=20
> Finally, a reasoned argument.
>=20
> > 4- Noise floor - Assuming you also upgrade the LOs and PTOs to solid
> > state PLL circuits, your noise floor will get worse due to phase =
noise
> > from the PLL's.
>=20
> When you hook an antenna up to an HF radio, atmospherics will mask all =
of
> that. The noise floor is the broken thermostat in the neighbors =
house.
>=20
> > 5- Why bother? If I want a solid state radio, I'll go buy one =
designed
> > for solid state devices.
>=20
> Also, a well reasoned argument.
>=20
>=20
> --__--__--
>=20
> Message: 8
> Date: Sat, 10 Aug 2002 10:03:33 -0500
> Subject: Re: [R-390] Reasons NOT to Solid State a 390
> From: blw <[email protected]>
> To: R390 LISTINGS <[email protected]>
>=20
>=20
>=20
> > From: JAMES T BRANNIGAN <[email protected]>
> > Date: Sat, 10 Aug 2002 09:50:04 -0400
> > To: [email protected], R390 LISTINGS =
<[email protected]>
> > Subject: Re: [R-390] Reasons NOT to Solid State a 390
> >=20
>=20
> >> 4- Noise floor - Assuming you also upgrade the LOs and PTOs to =
solid
> >> state PLL circuits, your noise floor will get worse due to phase =
noise
> >> from the PLL's.
> >=20
> > When you hook an antenna up to an HF radio, atmospherics will mask =
all of
> > that. The noise floor is the broken thermostat in the neighbors =
house.
> >=20
>=20
>=20
>=20
> If I were to follow that logic there would be no reason to even own a =
HF
> receiver. I would hate to live where you do with those atmospherics =
always
> masking things. My area produces some extremely quiet periods with =
great DX.
>=20
>=20
>=20
>=20
> --__--__--
>=20
> Message: 9
> Date: Sat, 10 Aug 2002 12:11:03 -0400
> From: JAMES T BRANNIGAN <[email protected]>
> Subject: Re: [R-390] Reasons NOT to Solid State a 390
> To: R-390 list <[email protected]>, blw <[email protected]>
>=20
> > > When you hook an antenna up to an HF radio, atmospherics will mask =
all
> of
> > > that. The noise floor is the broken thermostat in the neighbors =
house.
>=20
> > If I were to follow that logic there would be no reason to even own =
a HF
> > receiver. I would hate to live where you do with those atmospherics =
always
> > masking things. My area produces some extremely quiet periods with =
great
> DX.
>=20
> You are indeed fortunate to live in a quiet location.
> Most urban and suburban locations sport a variety of interesting RF =
noises.
> HV lines, cable TV leakage, appliance noise, computers and home
> entertainment devices, lawn mowers...... These are combated using
> directional antennas, noise blankers, DSP.....
>=20
> Other QRN is from thunder storms (propagated over thousands of miles), =
solar
> noise, splatter and harmonics from transmitters and general =
atmospheric
> crud.
>=20
> When an antenna is conected to an HF radio you should hear the "roar" =
of the
> airwaves.
> If not, check the antenna, feedline and alignment.
>=20
> Jim
>=20
>=20
>=20
> --__--__--
>=20
> Message: 10
> From: "Bryan Stephens" <[email protected]>
> To: <[email protected]>
> Subject: Re: [R-390] R-390 restoration
> Date: Thu, 8 Aug 2002 22:33:26 -0400
>=20
> I didn't realize the 6082 was as hard to find as the 26Z5W or 3TF7, =
but I
> plan to take about a dozen NOS to the Carroll County Tailgate Fest
> (Westminster, MD)this weekend for sale or trade (~$9/ea is that
> reasonable?). If anyone is in a crunch for a pair, let me know and =
I'll set
> a couple aside. Also have a few of the Z5 and ballast plus =
miscellaneous
> 390A/392 parts.
>=20
> Bryan Stephens
> [email protected]
> ----- Original Message -----
> From: "DAVID MEDLEY" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, August 08, 2002 7:49 PM
> Subject: [R-390] R-390 restoration
>=20
>=20
> I have followed with interest the thread re solid stating an R-390 and
> heartily concur with those who oppose this idea. I have spent the last
> several years restoring R-390 radios to as near original as I can but =
this
> job is getting more difficult as time goes by. This is due to the =
dwindling
> supply of spare parts, especially tubes. The 3TF7 seems to have joined =
the
> list of unobtainables together with the 26Z5W and the 6082. There are =
a
> number of solutions to replacing the 3TF7 and solid stateing the power
> supply is no big deal. The 6082 is another matter end I would love to =
see a
> thread develop towards replacing them with something readily =
available. I
> think there have been thoughts given to solid stateing the VR =
circuitry but
> that would be a major departure from the original and spoil the radio =
as an
> item I believe. Other small parts such as antenna relays and RF coils =
can
> oly be found in junkers and parts radios and I am always on the =
lookout for
> those.
> Dave KI6QE
>=20
> David Medley
> Tucson AZ
>=20
>=20
> --- StripMime Report -- processed MIME parts ---
> multipart/alternative
> text/plain (text body -- kept)
> text/html
> The reason this message is shown is because the post was in HTML
> or had an attachment. Attachments are not allowed.
> Please post in Plain-Text only.---
> _______________________________________________
> R-390 mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/r-390
>=20
>=20
> --__--__--
>=20
> Message: 11
> Reply-To: <[email protected]>
> From: "AI2Q Alex" <[email protected]>
> To: "'Tom M.'" <[email protected]>,
> "'blw'" <[email protected]>, <[email protected]>
> Subject: RE: [R-390] Solid State R-390, Why Not?
> Date: Sat, 10 Aug 2002 11:35:01 -0400
>=20
> Hey Tom, I drive a 1960 Austin-Healey 3000, and every original part is =
still
> on the car, it steers perfectly, runs great, is very fast, and makes =
the
> unmistakable sound that only a "Big Healey" can make! Var-o-o-o-o-m!
>=20
> There are NO transistors in this car!
>=20
> No room in it for a 390 though. :-(
>=20
> Vy 73, AI2Q, Alex in Maine .-.-.
>=20
>=20
>=20
> -----Original Message-----
> From: [email protected] =
[mailto:[email protected]]On
> Behalf Of Tom M.
> Sent: Saturday, August 10, 2002 8:27 AM
> To: blw; [email protected]
> Subject: [R-390] Solid State R-390, Why Not?
>=20
>=20
> Gentlemen?
>=20
> Why not solid state a R-390A?
>=20
> If it was very rare I'd say no. But as plentiful as they are, why not
> advance
> the range of the 390A hobby?
>=20
> Regarding the grandpa with two Jags, I guess I don't need to go into =
the
> joke
> as to why Jags are sold in pairs.
>=20
> 73 Tom
>=20
> Favorite bumper sticker: "THE PARTS WHICH ARE FALLING FROM THIS =
MACHINE ARE
> OF
> THE FINEST BRITISH MANUFACTURE"
>=20
>=20
> --- blw <[email protected]> wrote:
> >
> > > Saddest part is that the Jags are a very reliable car if you =
maintain
> them
> > > properly. Unfortunately too many people want the looks but have =
all they
> > can
> > > do
> > > to change the oil regularly. At least their problems are solved =
now with
> > the
> > > Forduars. Plug-n-play mentality, not unlike ricebox vs. tube rigs.
> > >
> > > 73, Todd/'Boomer' KA1KAQ
> >
> >
> > My grandfather had a couple of new Jags about 10 years ago. I drove =
them
> > both and they were absolutely depressing. One had a lot of interior =
parts
> > falling off and lying on the floor mats. Nice acceleration. I =
couldn't
> hold
> > either in a straight line no matter how smoothly I drove it. They =
wandered
> > all over the place. I grew up with a Jag that my dad had back around
> > 1957-58. It was beautiful. That is one of the reasons I was so =
depressed
> > with Jags 10 years ago.
> >
> >
> > Barry
> >
> > _______________________________________________
> > R-390 mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/r-390
>=20
>=20
> __________________________________________________
> Do You Yahoo!?
> HotJobs - Search Thousands of New Jobs
> http://www.hotjobs.com
> _______________________________________________
> R-390 mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/r-390
>=20
>=20
> --__--__--
>=20
> Message: 12
> From: "Bob Tetrault" <[email protected]>
> To: "JAMES T BRANNIGAN" <[email protected]>,
> <[email protected]>
> Subject: RE: [R-390] VIRUS !?!?
> Date: Sat, 10 Aug 2002 11:32:39 -0700
>=20
> As a rebuttal to this, my home address book contains my work email =
address
> since I frequently work back and forth. No virus laden email has ever =
come
> from home.
> End of story.
>=20
> -----Original Message-----
> From: [email protected] =
[mailto:[email protected]]On
> Behalf Of JAMES T BRANNIGAN
> Sent: Saturday, August 10, 2002 5:08 AM
> To: Bob Tetrault; [email protected]
> Subject: Re: [R-390] VIRUS !?!?
>=20
>=20
>=20
>=20
> > Funny, but my Wintel 98 Outlook box behind a cable modem behind a =
DHCP/NAT
> > router has never, and I mean NEVER, had a virus. No AV whatsoever.
> >
> > Now I really should pull on the rubber suit and duck while crossing =
the
> info
> > superhighway!
> >
> > Whistling in the dark in Bridgetown, OR
>=20
> Well, you don't think you have a virus, but without AV you will never =
know.
> Just because the computer is still working doesn't mean it is clean. =
You
> could be harboring one of the little suckers that collects e-mail =
addresses
> and remails these gems.
> Anyone without CURRENT AV, exposes themselves to a potential killer =
(been
> there cleaned it up) and exposes everyone they are in contact with to =
a
> potential problem. The DHCP in the router does nothing to prevent =
this.
>=20
> Jim
>=20
> _______________________________________________
> R-390 mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/r-390
>=20
>=20
> --__--__--
>=20
> Message: 13
> From: [email protected]
> Date: Sat, 10 Aug 2002 15:39:09 EDT
> To: [email protected]
> Subject: [R-390] R-390 and Jagrolets
>=20
> I have owned a bunch of Jags over the last 30 odd years. I currently =
have 2 =20
> XJ-6's.=20
> Both Chevrolet powered.
> I think you should look at putting a Chevy 350 in your Jag the same =
way you=20
> would look at putting solid state rectifiers in your R-390 in place of =
the=20
> 26Z5's. Both are reversable if you should ever want to " restore" to =
original=20
> condition. 26Z5's are bloody expensive as are Jag engine parts. And =
the solid=20
> state rectifiers are very reliable for day to day service as is the =
Chevy=20
> engine.
>=20
> As to putting the Chevy 350 in an XKE, you are going to have to alter =
the=20
> sheetmetal but that is reversible because all the body panels are =
still=20
> available. You can put a Ford small block in an XKE without altering =
the=20
> sheet metal. I have not done that one myself, but I have seen it =
done.The=20
> Ford engine is narrower than the Chevy.=20
>=20
> And for your file of barely usefull information, one can easily turn =
an XKE=20
> coupe into a more valueable ragtop with all factory parts. The XKE was =
> originally a ragtop from whence the coupe evolved.
>=20
> Kindest regards,
> Dave
> =
*************************************************************************=
*****
>=20
> ***
>=20
>=20
> In a message dated 8/9/02 1:08:59 PM Central Daylight Time,=20
> [email protected] writes:
>=20
> << Surely it would be better to buy a solid state radio than to
> > modify an R-390. This reminds me of the guys who used to put small =
block
> > Chevy engines in their Jaguar XK-E's. To gain some added =
reliability, they
> > made an abortion out of the most beautiful car ever made, when they =
could
> > have just bought a Corvette.
> =20
> Saddest part is that the Jags are a very reliable car if you maintain =
them
> properly. Unfortunately too many people want the looks but have all =
they can=20
> do
> to change the oil regularly. At least their problems are solved now =
with the
> Forduars. Plug-n-play mentality, not unlike ricebox vs. tube rigs.
> >>
>=20
>=20
> --__--__--
>=20
> _______________________________________________
> R-390 mailing list
> [email protected]
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>=20
>=20
> End of R-390 Digest