I would like to buy a good used HF amplifier

Just FYI -- assuming you mean a linear for Amateur Radio use and NOT CB use
in case u didn't know
Well for Amateur Radio, some linears do NOT cover the WARC bands and trying
to horse it to 12, 17 and 30M can be dicey.
In some cases -- may blow up the amp. Mods for WARC operation can be very
complicated.

You will get a better response to WTB Linear Amplifier if you specify bands
and power and have a Ham license.

Linears modified for 10M should be sold to Amateur Radio Operators only with
a valid FCC license.

From FCC Rules -- Part 95 - Sec. 95.411 (CB Rule 11) May I use power
amplifiers?

(a) You may not attach the following items (power amplifiers) to
your certificated CB transmitter in any way:
(1) External radio frequency (RF) power amplifiers (sometimes called
linears or linear amplifiers); or
(2) Any other devices which, when used with a radio transmitter as a
signal source, are capable of amplifying the signal.
(b) There are no exceptions to this rule and use of a power
amplifier voids your authority to operate the station.
(c) The FCC will presume you have used a linear or other external RF
power amplifier if--

[[Page 537]]

(1) It is in your possession or on your premises; and
(2) There is other evidence that you have operated your CB station
with more power than allowed by CB Rule 10, Sec. 95.410.
(d) Paragraph (c) of this section does not apply if you hold a
license in another radio service which allows you to operate an external
RF power amplifier.

[48 FR 24894, June 3, 1983, as amended at 63 FR 36610, July 7, 1998]

73 From The Signal In The Noise
Caveat Linear Ya All
-----------------------
"James Dickson" wrote in message
...
I would like to buy a good used HF amplifier

WTB HF Linear Amplifer
about 1000 watts I would like to spend 500 to 700 dollars for this amp
please email



73
KC8BEV





"Caveat Lector" wrote in message
news:Ggs7b.30878$S_.12207@fed1read01...
Just FYI -- assuming you mean a linear for Amateur Radio use and NOT CB
use
in case u didn't know
Well for Amateur Radio, some linears do NOT cover the WARC bands and
trying
to horse it to 12, 17 and 30M can be dicey.
In some cases -- may blow up the amp. Mods for WARC operation can be very
complicated.

You will get a better response to WTB Linear Amplifier if you specify
bands
and power and have a Ham license.

Linears modified for 10M should be sold to Amateur Radio Operators only
with
a valid FCC license.

From FCC Rules -- Part 95 - Sec. 95.411 (CB Rule 11) May I use power
amplifiers?

(a) You may not attach the following items (power amplifiers) to
your certificated CB transmitter in any way:
(1) External radio frequency (RF) power amplifiers (sometimes called
linears or linear amplifiers); or
(2) Any other devices which, when used with a radio transmitter as a
signal source, are capable of amplifying the signal.
(b) There are no exceptions to this rule and use of a power
amplifier voids your authority to operate the station.
(c) The FCC will presume you have used a linear or other external RF
power amplifier if--

[[Page 537]]

(1) It is in your possession or on your premises; and
(2) There is other evidence that you have operated your CB station
with more power than allowed by CB Rule 10, Sec. 95.410.
(d) Paragraph (c) of this section does not apply if you hold a
license in another radio service which allows you to operate an external
RF power amplifier.

[48 FR 24894, June 3, 1983, as amended at 63 FR 36610, July 7, 1998]

73 From The Signal In The Noise
Caveat Linear Ya All
-----------------------
"James Dickson" wrote in message
...
I would like to buy a good used HF amplifier

"Caveat Lector" wrote in message
news:Ggs7b.30878$S_.12207@fed1read01...
Just FYI -- assuming you mean a linear for Amateur Radio use and NOT CB
use
in case u didn't know
Well for Amateur Radio, some linears do NOT cover the WARC bands and
trying
to horse it to 12, 17 and 30M can be dicey.
In some cases -- may blow up the amp. Mods for WARC operation can be very
complicated.

You will get a better response to WTB Linear Amplifier if you specify
bands
and power and have a Ham license.

Linears modified for 10M should be sold to Amateur Radio Operators only
with
a valid FCC license.

Are you just trying to start an arguement?? I can see nothing in his
original post that would cause me to think he was a CB'er. Just because he
didn't post his callsign? Stop playing newsgroup cop and go away. I don't
care if you go away mad, just go away.

I and many many other Hams would not consider selling a linear to a
non-ham, so -- I so informed him -- he reposted with his callsign -- I'll
bet he gets lots more responses now

And he didn't specify power or bands and as I sed many older linears don't
cover the WARC bands.

So all that was helpful (agree?)

Your response was not.

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------
" Are you just trying to start an arguement?? I can see nothing in his
original post that would cause me to think he was a CB'er. Just because
he
didn't post his callsign? Stop playing newsgroup cop and go away. I
don't
care if you go away mad, just go away.

In fact, my Ham buddy has an older linear for sale -- I gave him the info
and he is going to e-mail the original poster --
NOW THAT MY FRIEND CAN VERIFY THAT THE WTB POSTER IS A HAM -- GET IT ???

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------------------------
"Caveat Lector" wrote in message
news:%jH7b.33568$S_.16826@fed1read01...
I and many many other Hams would not consider selling a linear to a
non-ham, so -- I so informed him -- he reposted with his callsign -- I'll
bet he gets lots more responses now

And he didn't specify power or bands and as I sed many older linears don't
cover the WARC bands.

So all that was helpful (agree?)

Your response was not.

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------
" Are you just trying to start an arguement?? I can see nothing in his
original post that would cause me to think he was a CB'er. Just because
he
didn't post his callsign? Stop playing newsgroup cop and go away. I
don't
care if you go away mad, just go away.

Maybe some amps won't tune on the WARC bands, but my Ameritron AL-80A tunes
up just fine on 18 and 24 MHz.

I can't see how anyone could use an amp on thirty meters, unless they were
running something like an FT-817 as an exciter.

Ed Cregger


"Caveat Lector" wrote in message
news:%jH7b.33568$S_.16826@fed1read01...
I and many many other Hams would not consider selling a linear to a
non-ham, so -- I so informed him -- he reposted with his callsign -- I'll
bet he gets lots more responses now

And he didn't specify power or bands and as I sed many older linears don't
cover the WARC bands.

So all that was helpful (agree?)

Your response was not.

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------
" Are you just trying to start an arguement?? I can see nothing in his
original post that would cause me to think he was a CB'er. Just because
he
didn't post his callsign? Stop playing newsgroup cop and go away. I
don't
care if you go away mad, just go away.

Yep I have a AL-80B and it tunes sort of OK on the WARC bands.
Problem is Ameritron AL-80A and B has one tuned input circuit for both 10M
and 12M
And another single circuit for 15 and 17M
And another for 20/30M
And they are a compromise
So you may have VSWR from exciter to linear input
I Asked Ameritron about this and they confirmed it.
But my ATU in the exciter compensates very well -- so no problem.

I found the AL-80B's exclusive Dynamic ALC - to be a nightmare -- so
modded mine to be an AL-80A

I didn't mean to imply big linears for 30 M as it is limited to max 200
Watts out.
Just mentioning (not too well hi hi) that WARC bands include 30 Meters
But My Ameritron is labeled 20/30 Meters, so perhaps one might use a linear
to get 200 Watts -- I never do, however.

some amps won't tune on the WARC bands ---- I was referring to old amps
like Heathkit, Kenwood and others that do not tune the WARC Bands

A ham here frazzled a Kenwood amp trying to horse it to 12M
Caveat Old Linear

--
73 From The Signal In The Noise
Caveat Lector Ya All
"Ed Cregger" wrote in message
...
Maybe some amps won't tune on the WARC bands, but my Ameritron AL-80A
tunes
up just fine on 18 and 24 MHz.

I can't see how anyone could use an amp on thirty meters, unless they were
running something like an FT-817 as an exciter.

Ed Cregger


"Caveat Lector" wrote in message
news:%jH7b.33568$S_.16826@fed1read01...
I and many many other Hams would not consider selling a linear to a
non-ham, so -- I so informed him -- he reposted with his callsign --
I'll
bet he gets lots more responses now

And he didn't specify power or bands and as I sed many older linears
don't
cover the WARC bands.

So all that was helpful (agree?)

Your response was not.

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------
" Are you just trying to start an arguement?? I can see nothing in his
original post that would cause me to think he was a CB'er. Just
because
he
didn't post his callsign? Stop playing newsgroup cop and go away. I
don't
care if you go away mad, just go away.

Like you, I used the tuner in the rig as a flattener, although the mismatch
between rig and amp was not enough to worry with anyway.

Why anyone would want to run more than 100 watts on 24 MHz is a mystery to
me. If the band is open, 5 watts will generally do the trick. If the band
isn't open, full legal limit power won't help. Self induced backscatter
doesn't begin until much higher power levels. We won't go there.

Yep, you're right about the Heathkit and other old amps.

Ed Cregger



"Caveat Lector" wrote in message
news:T5L7b.33602$S_.17720@fed1read01...
Yep I have a AL-80B and it tunes sort of OK on the WARC bands.
Problem is Ameritron AL-80A and B has one tuned input circuit for both 10M
and 12M
And another single circuit for 15 and 17M
And another for 20/30M
And they are a compromise
So you may have VSWR from exciter to linear input
I Asked Ameritron about this and they confirmed it.
But my ATU in the exciter compensates very well -- so no problem.

I found the AL-80B's exclusive Dynamic ALC - to be a nightmare -- so
modded mine to be an AL-80A

I didn't mean to imply big linears for 30 M as it is limited to max 200
Watts out.
Just mentioning (not too well hi hi) that WARC bands include 30 Meters
But My Ameritron is labeled 20/30 Meters, so perhaps one might use a
linear
to get 200 Watts -- I never do, however.

some amps won't tune on the WARC bands ---- I was referring to old
amps
like Heathkit, Kenwood and others that do not tune the WARC Bands

A ham here frazzled a Kenwood amp trying to horse it to 12M
Caveat Old Linear

--
73 From The Signal In The Noise
Caveat Lector Ya All
"Ed Cregger" wrote in message
...
Maybe some amps won't tune on the WARC bands, but my Ameritron AL-80A
tunes
up just fine on 18 and 24 MHz.

I can't see how anyone could use an amp on thirty meters, unless they
were
running something like an FT-817 as an exciter.

Ed Cregger


"Caveat Lector" wrote in message
news:%jH7b.33568$S_.16826@fed1read01...
I and many many other Hams would not consider selling a linear to a
non-ham, so -- I so informed him -- he reposted with his callsign --
I'll
bet he gets lots more responses now

And he didn't specify power or bands and as I sed many older linears
don't
cover the WARC bands.

So all that was helpful (agree?)

Your response was not.

--
73 From The Signal In The Noise
Caveat Lector Ya All
-----------------------------
" Are you just trying to start an arguement?? I can see nothing in
his
original post that would cause me to think he was a CB'er. Just
because
he
didn't post his callsign? Stop playing newsgroup cop and go away.
I
don't
care if you go away mad, just go away.

Ed:

You don't understand the reason lots of hams (and others grin) use amps.
It is important to take up as much bandwidth as possible. A dirty amp
assisted by over-modulation is very effective for this. A secondary reason
is so that you will be told "wow, you are 40 over 9." Clearly those reasons
are worth (trying to) taking up the entire phone portion of the band
...right?

Paul AB0SI

p.s. for the irony impaired, I am agreeing with Ed.



"Ed Cregger" wrote in message
...
Like you, I used the tuner in the rig as a flattener, although the
mismatch
between rig and amp was not enough to worry with anyway.

Why anyone would want to run more than 100 watts on 24 MHz is a mystery to
me. If the band is open, 5 watts will generally do the trick. If the band
isn't open, full legal limit power won't help. Self induced backscatter
doesn't begin until much higher power levels. We won't go there.

Yep, you're right about the Heathkit and other old amps.

Ed Cregger