[Amps] Interesting new amplifier

[Roger (K8RI)]

As others have already said, FCC approval does not apply to imported 
amps. That's why you could purchase Emtron's DX-2sp, DX-3sp, and DX5 
tetrode amps. The gain was not limited as is the gain for the OM amps.

IOW, you could import a 10 or 20 KW band switched amp with 20 plus db 
gain, no questions asked.  This gave us the ability to purchase a manual 
tuned amp with enough overhead to run digital @ 100% duty cycle.  Of 
course that overhead also gave the ability to run 2.5 to 3 KW PEP.

The only caveat is they have no US based sales outlets.

The gain limit has long been outdated as the reason for it has not 
existed for decades.  Will the FCC ever get rid of limiting the gain of 
separate amps? Recently there were letters of comment that were almost 
irate about removing the gain limits. Apparently those hams are still 
living in the past. The same can be said for amps being sold that 
require hams to modify them to cover 10 meters.


73, Roger (K8RI)

On 5/16/2017 Tuesday 12:42 PM, Jim Thomson wrote:
> Date: Tue, 16 May 2017 05:11:38 +0000
> From: Bill Turner <dezrat at outlook.com>
> To: Amps group <amps at contesting.com>
> Subject: [Amps] Interesting new amplifier
>
>
> <4Z4RB has been selling amplifier boards on eBay for some time, but I
> <see he now is selling a complete amp (less power supply) at a pretty
> <good price:
>
> http://www.ebay.com/itm/1500w-2-x-LDMOS-LINEAR-POWER-AMPLIFIER-LEGAL-LIMIT-/162503347501?
>
> <Obviously not FCC approved. I suspect he gets around that by claiming,
> <in effect, that it is homebrewed. Is that legal?
>
> <I sent him a message asking about duty cycle at full power and if a
> <manual can be downloaded. Waiting for reply.
>
> <Does anyone have any experience or comments about the amp or the
> <seller?
>
> <73, Bill W6WRT
>
> ##  Looks like a bargain to me.  He also makes a 1 kw amp with a single LDMOS device....  $1600.00 ( also less power supply).
> http://www.ebay.com/itm/BLF188XR-1kw-LINEAR-POWER-AMPLIFIER/162503185277?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D40130%26meid%3D0b6e78f2c5754c899998225e57dddd32%26pid%3D100005%26rk%3D5%26rkt%3D6%26sd%3D152536460986
>
> ##  The 1.5 kw amp Bill mentioned above is $2400.00    ( less power supply).   Both amps cover 1660-6m...and both contain 7 x LP filters.   I dont see 30M band on either of them though.
>
> ##  either of them can be driven with just 5 watts.  He has a 5 / 50 input on the back, so a 10 db  attenuator can be switched in for your typ 100w xcvr.
> ##  he also offers  an optional vac relay.   Rated for AM, FM, SSB, CW.  No mention of duty cycle or imd etc.
> I nominate Bill to race out and buy one, then evaluate it for the rest of us.
>
> Jim  VE7RF
>      
>
>
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