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Dr Alex UR4LL has quite a few
Russian electronics parts and some equipment for sale. The list is updated periodically, and
some items have pictures (click on links for details and/or pictures of each item); (Email
UR4LL
for details). If your email program does not pick up the "UR4LL" email link, his address is
"ur4ll" followed by "@" and "bk.ru". Alternate email addresses are
"ur4ll" followed by "@" and "gmx.com" or
"ur4ll" followed by "@" and "aim.com".
It is also possible to contact Dr Alex via SKYPE, address "alexgavva".
TRIODES:
GS35B
1500+W thru 432 MHz new in box - $120
Coaxial resonator PA for GS35b.
OK for 432MHz,minimal hours in use, perfect shape. Schematic available. Weight without tube 22kg. Price without tube $300.
GS31B
Almost identical to GS-35B except 1KW anode instead
of 1.5KW, and designed for almost TWICE the tube life 1200W out thru 432 MHz.
Original factory package. - $85
(NOTE from ND2X: Two GS-31B triodes will outperform a pair of 3CX800's at less than 20% of the cost).
GS9B
300W on HF to 432MHz, >100 W on 13cm
(K9EK
cavity design) - $10 without cooler, $15 with cooler
GI21B, 110 W on 8.5cm - $10 and its socket - $8
GI7B & GI7BT 300-400W, HF to 300MHz; 250W thru 23cm) - $25;
socket - $40
GU5B 2.5kW triode (3.5kW on HF) - $110 &
GU5b socket SOLD
GU56 good for kW to 40MHz - $100
 811 $25 per pair
TETRODES:
813 - $25
Two of these tubes run 1kW without cooling and the associated blower noise.
GK71 - $30; sockets - $15
Two of these tubes run 1kW without cooling & associated blower noise. Equivalent to 471 (or RS-471?).
6P45S Tube - $15 / Socket - $2.
This is a sweep tube, similar to PL519 except the heater voltage is 6.3V.
GS15B
500+ W on 23 cm in KD5FZX PA design - $15.
Socket - $20.
Coaxial resonator PA with GS15b (Good for 432MHz) with air
cooling fan. Schematic available -$150.
GU19B tetrode - $10; sockets - $15
This tube works on 2m.
GS23B
1.5KW on 70cm; N7ART, KD5FZX, K5GW
PAs (same as 4CX1600U; similar to YL1050) - $140
GS36B
Same as 4CX400A - $65
GU29B tetrode
$10, socket $5 This is a small glass tetrodes widely used in Eastern Eu for building 100W PA; roughly equivalent to
SRS4451, QQE06/40, RS1009, 5894, CV2797, 829B
GU34B - $40
NIB, passed military control. Works up to 250 MHz, Ua max 2.5kV. Base similar to GU43b. See
YU1AW information for usae on 2M (scroll to bottom
of page). It will do 1KW on HF with no problem.
GU35B - $200
Good through 250 MHz,Anode dissipation rating 3.5kW, Ua max 5kV.
It's easy to build a socket for this tube: GU35B basement - Note that the central pin is Grid 1.
GU43B
OK for HF-6m, similar to 4CX1600; 1600 W up to 100 MHz - $60
gu84b.html
socket - will sell with tube only - SOLD
GU47b 6kW HF tetrode (socket is available) Tube - $200
GU50 tetrode (analog of German LS50)-$10, socket $7
GU74b 250MHz (4CX800 equivalent) tetrode Tube - $100, (Socket - use one for 4CX250B)
Cooling compartment for GU-74B with doorknob capacitor; OK for similar size tubes - $20
GU84B - $390; Socket for GU84B - $150
PENTODES:
GU81M - $65, socket - $35
Two of these tubes run 3kW without cooling and the associated blower noise. See schematic.
GU71B
1.5kW pentode (click for spec sheet) - $200, socket - $50
AUDIO TUBES:
GM5B audio triode - $50 (socket is available)
6C33C audio triode - ( 6S33S) - $20. Sockets are
available -$5. It is easy to find data and schematics if you Google 6C33C
6N1P double triode. Equal to E88LC,6DJ8,6922. $3
6N9S double triode. Equal to 6SL7GT,6SL7,1579. $3
6N24P double triode. Equal to 6FC7,ECC89. $3
MISCELLANEOUS:
Neon TH20 and TH30 bulbs - the best RF indicator -$4
Antenna Mast Guys Steel cable with insulators, 10-15m long (4pcs on bobin) - $40
NOTE: These cables are able to be loaded up to 1.1 ton ( or abt 2300lbs) before failure.
PL26-1PD sockets for GMI-11 tetrode - $15
Ceramic Coil Forms - $6
RF transormer - $15
Digital Readout - $20
Widely used here for HB tranceivers, replacement (adding) freq counters in old models of tranceivers. OK for 1-3 IF radios, works up to 60 MHz.
RF part of 1 IF tranceiver - $45
Ukrainian designed and professionally built and aligned. It includes X-tal 2.7kHz filter. It is necessary to add a VFO, BPF and PA to build simple SSB/CW transceiver.
HEATER TRANSFORMERS:
Heater transformer for GU39A-1; primary 220-240V, secondary 6.3V@150A - $100
TH46, 58W, 220-240/110-127V prim, secondary 4x6.3V@2.65A - $22
TH55, 98W, 220-240/110-127V prim, secondary 2x6.3V@0.87A + 2x6.3V@8A - $25
TH8, 58W, 220-240/110-127V prim, secondary 2x6.3V@5.4A - $25
TH58, 122W, 220-240/110-127V prim, secondary 3x6.3V@6.3A + 6.3V@3A - $30
TH61, 190W, 220-240/110-127V prim, secondary 3x6.3V@9.2A+6.3V@7A - $35
ANODE TRANSFORMERS:
#1 - primary 220-240V, secondary 900-1000v @~0.9A - $100
#1 - primary 220-240V, secondary 900-1000v @~0.9A - $100
METERS: Size is 60x60mm, requires 50mm diameter wall hole - $20 each
1A
100mA
100-0-100mA
1.5KV
3A current meter with RF probe NIB - $25 each
RELAYS:
RF Relay
>1000 W (for HF) open-frame relay, 24-27VDC coil (use for HV, e.g. 3kV 2A is no problem) - $10
RF Relay: Small size open frame relays (OK for GU74b); It is possibly to use
these relays for Pi circuits with 1 kW and more. - $15
RF Relay: Open frame 2 position relays. Using a pair of these relays
it is possibly to build 5 bands switcher for Pi-circuit. It has neutral position if it is tongue directed to down, I kW it is not a problem for it. Russians call it "tongue of my mother-in-law" - $10
REW-15
1500 W (thru 650 MHz) 75 ohm coaxial relay with 3 cable connectors - $23
See
writeup for notes on using this relay in 50 ohm PAs, especially
HF and 6M - no sweat!!
REW-14
1500 W (thru 650 MHz) 50 ohm coaxial relay with 3 cable connectors - SOLD
REW16 500W (thru 1000 MHz - usable at 1296MHz) 50 ohm coaxial relay with 3 cable connectors - $35.
REW17 REW17 75 ohm relay, works up to 23cm - $25.
B1B Vacuum
Relay, 3KV, 10A - $20 each
 B2B Vacuum Relay, 4KV, 15A - NIB -
$30 each
RPA12
polarized RF relay; input circuits of HF PA with 80-100W or more, 30-40W up to 150 MHz - 13 VDC coil models -$6 and 27VDC coil models- $5
RESISTORS: UPDATED
150 Ohm 10W non-inductive - $2 each
100 Ohm 60W non-inductive - $10 each
75 Ohm 25W non-inductive - $3 each
51 Ohm 20W non-inductive - $4 each
50 Ohm 25W non-inductive - $5 each
17 Ohm 25W non-inductive - $2 each
17 Ohm 100W non-inductive - $7 each
17 Ohm 50W non-inductive - $5 each
INSULATORS:
Inverted-V dipole or high power wire Antenna Insulator - $20 each
Antenna Insulator - $8 each - Good for high power.
Antenna Insulators - Ceramic (pictured top, $1 each, pictured bottom, $1.50 each)
Antenna Insulators (used by military) - $5
Antenna Insulator - $10 each - General Purpose antenna insulator.
BIG Antenna Insulator - $20 each - General Purpose antenna insulator.
More Feedthrough Insulators - $3 each
Big Feedthrough Insulator - $10 each
Vacuum capacitors:
12.5pF 10kV - $9
25pF 15kV - $9
50pF 15kV -$10
100pF 15kV - $10
150pF 15kV - $13
200pF 15kV - SOLD
250pF 15kV - SOLD
300 pF 15 kV - $15
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Vacuum Variable capacitors:
3-50 pF 25 KV max dia. 75mm, max len. 179mm (with shaft) - $50
5-100 pF 25 KV 50 A max dia. 87mm, max len. 191mm (with shaft) - $65
5-250pF 5KV max dia. 70mm, max len. 156mm (incl shaft) - $105
w/mounting hardware SOLD
10-500 pF 10 KV max dia. 115mm, max len. 254mm (with shaft) - $105
7.5-350pF 10kV max dia. 100mm, max len. 249mm (with shaft) - SOLD
15-750pF 5KV max dia. 108mm, max len. 200mm (incl shaft) - SOLD
(measured capacity is 10-780pF)
20-1000pF 10KV max dia. 145mm, max len. 278mm (incl shaft) - SOLD
w/mounting hardware & turns counter
10-1200pF 4KV max dia. 96mm, max len. 200mm, w/turns counter- $150
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NOTES:
All parts are "new off shelf, old stock," never used, unless otherwise noted.
Prices are in USD, but payment in Euro, GBP and AU$ ( Australian dollars) are also acceptable at current exchange rate.
Delivery period to Europe is about 5-7 days; to US, shipment takes about 8-12 days.
Shipping is not included in cost shown; contact UR4LL for shipping cost.
73. Alex, UR4LL.
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