[amsat-bb] L band gear

[Ed Krome]

I’m a bit surprised that so few are using portable (and no homebrew) 1267. Here’s an alternative, homebrew style. Something old and something new. 
Antenna: 12el hb yagi with folded dipole DE, mounted on top of Arrow with 8” fiberglass rod spacers
Amplifier: hb brick amp with RA18H1213G. See AMSAT Journal Jan-Feb 2019 for construction details. Can do 30W, but never use that much. 
Transmit-converter: ancient hb, dbm + discreet transistor amps. Would be so much easier today with MMIC’s. ~1/2W out. Originally built for AO-10 and used  a lot on -10 & -13
RF (2M) source: Baofeng UV5R+ ht. Why? Because that thing has no problem transmitting slightly below the 2M band edge. The trans-converter was crystaled so 145 in = 1269 out. AO92 is 1267.x, so the trans-conv requires 143.x input. In the AO10&13 days, the driver was a Drake T4X driving an hb 2M transverter. Complicated, but as a fixed station (100+W out from 2x7289) it worked well. 
The whole portable rig runs on a single drone battery. 
Now if I could just get around to operating once in a while. 

Ed K9EK

Sent from my iPhone

> On May 13, 2020, at 12:53 PM, 73 Bob W7LRD via AMSAT-BB <amsat-bb at amsat.org> wrote:
> 
> Hi all-  I would be curious to know what "everyone" is using for L band gear.  Perhaps others would like to know.  example I run
> IC-910- at 10W
> 70 feet of LMR600
> 24 element looper yagi horizontal polarized
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