HF FULL BAND Mod. v2 without preamp - INSTALL dual & single antenna (Si4732, two antennas)

Dual and Single antenna quansheng UV-K5 HF Full Band mod version 2. We are going to do both, single and dual antenna, using IPEX connector. It's not hard, instructions are comprehensive, YES LENGTHY, but from you 10 to 20 minutes of your time and basic tools.

Parts
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1. IPEX -- https://aliexpress.com/item/100500552... or https://aliexpress.com/item/400018567...
2. SMA connector, type 1 -- https://aliexpress.com/item/100500188...
3. Pigtails, 20cm with IPEX -- https://aliexpress.com/item/329093544...

Yes, we are going to use all 3. Basically pigtails you only need for cable, nut and washer, we going to solder cable into SMA connector and make it flush, because we can not straight up use pigtail, there is not enough room in there, the center pin is going to interfere with LCD flex cable.

LOW MELT SOLDER WARNING
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Just be sure to purchase that low melt which is listing chemical formula. You want to make sure that there is no Cadmium in your low melt. Because cadmium is toxic. Here is good wikipedia article -- https://en.wikipedia.org/wiki/Rose%27...

Where to buy it? Best is in your local electronics supply store. Online, I looked at amazon, and I didn't find anything that lists chemical formula -- I'm sure it's okey, but I wouldn't buy it. On eBay, if you look for "Rose's Metal" and also "Roses Metal", you will get what you need from Kazahstan and Ukraine, though, a bit more expensive than what I would pay. I buy like that much as they selling for $4 in Russia. So it's best to go to your local electronics supply store or places like Farnell, Mouser, Digi-Key, etc. In my city, it's $3.50 for 100 grams in my local electronics supply store. So be mindful of prices and be mindful of chemical formula.


Table of Contents
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0:00 - Intro
3:13 - Remove parts
28:05 - Install mod
1:02:08 - Install choke
1:11:26 - Dual antenna
1:32:36 - Test


Tools & Supplies
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These are cheaper to purchase locally if you have electronics supply store in your city, and there should be one, but you might not know about it:
1. LOW MELT SOLDER (or Rose's Metal), ask for chemical composition
2. 63/37 solder, for example Mechanic TY-V866, I used 0.6mm
3. Solder wick, GOOD WICK or Mechanic, I used 3mm wide CP-3015
4. Flux, for example Mechanic UV559
5. Flux off, or Benzin or Nefras-M C2-80/120
6. Optionally, small cheap solder iron
7. Solder mask

These you buy on aliexpress,

#1
Good solder iron, option 1 -- https://aliexpress.com/item/100500602...
Good solder iron, option 2 -- https://aliexpress.com/item/100500401...
(option 1 has tips like I use, for bigger electronics, option 2 has micro tips for really small stuff)

#2
Jeweler's Mask -- https://aliexpress.com/item/100500667...
Triplet -- https://aliexpress.com/item/100500589...
My Microscope -- https://aliexpress.com/item/100500473...

#3
Tweezers -- https://aliexpress.com/item/100500483...

#4
Optionally,
Cheap soldering station -- https://aliexpress.com/item/100500629...

#5
Solder mask -- https://aliexpress.com/item/100500456...

#6
UV light -- https://aliexpress.com/item/100500676... or https://aliexpress.com/item/100500605...

#7
3M -- https://aliexpress.com/item/100500662...



#quansheng #quanshenguvk5 #uvk5 #uvk6 #fullband #si4732 #hamradio #modification #v2 #fullband