VARA HF Modem Speeds


Tony
 

All:

I observed an unusually fast file transfer while using VARA on 40 meters today (see below). It's not uncommon to see speeds of 15,000 to 20,000 bytes/minute when the band is stable, but today's observation shows that faster speeds are possible under the right conditions.

I should mention that the 30K b/m speed was recorded while receiving a 30K image.

Tony -K2MO



*** Winlink Vara Connection to KC8YJJ @ 2021/01/17 20:09:59  USB Dial: 7101.000
*** Station Bearing: 268,  Range: 393 miles
RMS Trimode 1.3.36.0
K2MO has 120 minutes remaining with KC8YJJ
{SFI = 078 On 2021-01-17 20:00 UTC}
[WL2K-5.0-B2FWIHJM$]
;PQ: 44766187
CMS via KC8YJJ >
   ;FW: K2MO
   [RMS Express-1.5.34.0-B2FHM$]

   ;PR: 17655197
   ; KC8YJJ DE K2MO (FN30JV)
   FF
;PM: K2MO 36Y27O2YLIPH 30887 73guddx@gmail.com ---
FC EM 36Y27O2YLIPH 32990 30887 0
F> C5
   FS Y
*** Receiving 36Y27O2YLIPH
*** 36Y27O2YLIPH - 33005/30899 bytes received
*** Bytes: 31145,  Time: 01:03,  bytes/minute: 29618
   FF
FQ
*** --- End of session at 2021/01/17 20:11:49 ---
*** Messages sent: 0.  Total bytes sent: 0,  Time: 01:49, bytes/minute: 0
*** Messages Received: 1.  Total bytes received: 31145,  Total session time: 01:49,  bytes/minute: 17035
*** Disconnected from Winlink RMS: KC8YJJ @ 2021/01/17 20:11:56
*** Session: 1.9 min;  Avg Throughput: 15552 Bytes/min;   1 Min Peak Throughput: 15552 Bytes/min

Join main@digitalradio.groups.io to automatically receive all group messages.