[Milsurplus] 1985 ART-13 - Chinese

[Meir WF2U]

Nick, it was good seeing you at the AWA meet today, and thank for bringing
the Chinese ART-13 copy to my attention, so I could actually see and check
out the thing. It didn't occur to me to take photos, so thanks for taking
them.
Roby promised to take photos of it when I asked him to do so at his leisure.

I have a few observations comparing it with my Russian R-807 which was
manufactured in 1967 according to the nameplate.
When I looked at the Chinese version, at first I thought that it was an
R-807 labeled in Chinese. After further inspection it became evident that it
is a copy of the R-807... The quality (materials, construction) is somewhat
inferior to that of the R-807 and downright cruder. There is an interesting
difference in the HF oscillator tube in the Chinese version: instead of the
837 in both the ART-13 and the Russian R-807, the Chinese unit uses the
1625. I guess it's simpler logistically not having to stock an extra tube
type, as the multipliers are 1625's anyway in all 3 versions. 
The R-807 has the same frequency/tuning chart blank frame with printed paper
charts, which opens to reveal the dynamic/carbon microphone toggle switch,
and the side tone volume control rotary switch in front of the speech
amplifier as the original ART-13. The Chinese version has a solid panel in
front the speech amplifier, with no access to the switches (at least not
from the front panel - I haven't inspected the bottom of the speech
amplifier in the Chinese unit - or maybe they omitted these switches
altogether). The frequency/tuning chart is a white engraved plastic sheet,
about 1/16" thick, riveted to the front panel of the transmitter, in front
of the speech amplifier.  
The crudest components apparent on the Chinese unit are the connectors. The
ART-13 and the R-308 have the same type, size and pin-out power and control
connectors, so the ART-13 cables/plugs mate with those of the R-807
perfectly. The connectors on the Chinese transmitter, although apparently
have the same shell diameter (I haven't measured), the pin arrangement is
somewhat different, the pins diameter may be different also. The pins
protrude from very fragile-looking brown phenolic insulators. The power
connector has extra holes in the insulator where pins would be if the whole
area of the connector was utilized for pins (the power connector in all
three versions actually has 10 pins).

There may be some more differences/peculiarities, but short of taking the
transmitter apart, this is all I could observe of the transmitter. 

73, Meir WF2U
Landrum, SC

 
-----Original Message-----
From: milsurplus-bounces at mailman.qth.net
[mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Nick England
Sent: Friday, March 23, 2012 5:36 PM
To: Military Surplus Mail List
Subject: [Milsurplus] 1985 ART-13 - Chinese

For your amusement and edification - a fellow was displaying this 1985
Chinese ART-13 at the Charlotte Antique Wireless Assoc. meet today -
no it wasn't for sale
http://www.navy-radio.com/puzzlers.htm#art13
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